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          There Is Good News In The Universe, You Just Have To Look At Some Dirt To Find It      Cache   Translate Page      
Astrophysicist Adam Frank says you don't have to look to the stars to be impressed with the cosmic matter that binds us together. Pick up some dirt!
          Neil deGrasse Tyson Consults on The Orville's Scientific Accuracy      Cache   Translate Page      
Despite its penchant for the occasional fart joke, <a href="https://screenrant.com/tag/the-orville/"><strong><em>The Orville</em></strong></a> is relatively accurate with its science thanks to a team of advisors that includes astrophysicist and nerd icon, Neil deGrasse Tyson. The series might often feature outrageous aliens and unlikely scenarios, but when it comes down to it, its science is mostly intact.
          Gravity darkening and brightening in binaries      Cache   Translate Page      
Дата и время публикации : 2012-03-12T20:08:41Z Авторы публикации и институты : Helen E. White Thomas W. Baumgarte Stuart L. Shapiro Ссылка на журнал-издание: Ссылка на журнал-издание не найденаКоментарии к cтатье: 7 pages, 5 figures, matches version published in Astrophysical JournalПервичная категория: astro-ph.SR Все категории : astro-ph.SR, gr-qc Краткий обзор статьи: We apply a von Zeipel [...]
          The threat of Centaurs for the Earth      Cache   Translate Page      
Public Release: 8-Oct-2018 Astrophysicists calculate the impact probability and crater size of impac
          There Is Good News In The Universe, You Just Have To Look At Some Dirt To Find It      Cache   Translate Page      
Astrophysicist Adam Frank says you don't have to look to the stars to be impressed with the cosmic matter that binds us together. Pick up some dirt!
          Postdoctoral Fellow - Pulsar Astrophysics - WVU Research Corporation - Morgantown, WV      Cache   Translate Page      
The West Virginia University Research Corporation is seeking applications for a Postdoctoral Fellow – Pulsar Astrophysics....
From West Virginia University - Thu, 04 Oct 2018 16:06:11 GMT - View all Morgantown, WV jobs
           Gravitational-wave astrophysics with effective-spin measurements: Asymmetries and selection biases       Cache   Translate Page      
Ng, Ken K. Y. and Vitale, Salvatore and Zimmerman, Aaron and Chatziioannou, Katerina and Gerosa, Davide and Haster, Carl-Johan (2018) Gravitational-wave astrophysics with effective-spin measurements: Asymmetries and selection biases. Physical Review D, 98 (8). Art. No. 083007. ISSN 2470-0010. http://resolver.caltech.edu/CaltechAUTHORS:20181009-092350127
          There Is Good News In The Universe, You Just Have To Look At Some Dirt To Find It      Cache   Translate Page      
Astrophysicist Adam Frank says you don't have to look to the stars to be impressed with the cosmic matter that binds us together. Pick up some dirt! Reported by NPR 5 hours ago.
          Comment on EIA’s Electric Power Monthly – August 2018 Edition with data for July by Doug Leighton      Cache   Translate Page      
Synapsid -- A RARE STAR OPENS A WINDOW ON THE BEGINNING OF TIME EPFL astrophysicists actively participated in the discovery of a very rare star, which is particularly old and metal-poor. As a messenger from the distant past, it will allow the scientists to learn more about the young universe, right after the Big Bang. Read more at: https://phys.org/news/2018-10-rare-star-window.html#jCp
          The Great Debate      Cache   Translate Page      

Join us as we welcome some of the world’s greatest minds in ocean science and space exploration to campus for a fun and engaging debate inspired by the question: “What is the next frontier: space or the ocean?

Dal alumna Kathryn Sullivan (PhD’78), former NASA astronaut, will be joined by test pilot and Canadian Space Agency astronaut Joshua Kutryk and Canadian astrophysicist Christian Marois on the team representing space. Mark Abbott, president and director of the Woods Hole Oceanographic Institution, German marine biologist Antje Boetius and Dal’s own Boris Worm join forces on the ocean side. Well-known author, speaker and TV science broadcaster Jay Ingram of Daily Planet fame will serve as emcee.

Free admission with limited tickets available; registration required.

Register on Eventbrite


          There Is Good News In The Universe, You Just Have To Look At Some Dirt To Find It      Cache   Translate Page      

Astrophysicist Adam Frank says you don't have to look to the stars to be impressed with the cosmic matter that binds us together. Pick up some dirt!


          There Is Good News In The Universe, You Just Have To Look At Some Dirt To Find It      Cache   Translate Page      
Astrophysicist Adam Frank says you don't have to look to the stars to be impressed with the cosmic matter that binds us together. Pick up some dirt! (Source: NPR Health and Science)
          Jedidah Isler #ALD18 @findingada      Cache   Translate Page      
Jedidah Isler is an Astrophycist and was the first African American woman to earn a PhD from Yale in astrophysics. In addition to studying “hyperactive, supermassive black holes” Isler advocates for inclusivity in STEM. Via TED: Jedidah Isler has been staring at the stars since she was 11 or 12. But because neither her undergraduate […]
          The threat of Centaurs for the Earth      Cache   Translate Page      
Astrophysicists have investigated the long-term path development of Centaurs -- small icy bodies that orbit the Sun between Jupiter and Neptune.
          Επιστήμονες του Χάρβαρντ Βρήκαν πως Ταξιδεύουν οι Εξωγήινοι      Cache   Translate Page      
Δύο επιστήμονες από το Πανεπιστήμιο του Χάρβαρντ προτείνουν ότι οι μυστηριώδεις γρήγορες εκρήξεις ραδιοκυμάτων (FRB) που εντοπίστηκαν σε μακρινούς γαλαξίες, ίσως να αποτελούν απόδειξη ότι οι εξωγήινοι ταξιδεύουν μέσα στο σύμπαν.
Τα FRB είναι εξαιρετικά έντονες αναλαμπές ραδιοκυμάτων που διαρκούν λιγότερο και από ένα δευτερόλεπτο και εντοπίστηκαν από ειδικά τηλεσκόπια. Το πρώτο εντοπίστηκε πριν από περίπου δέκα χρόνια, ενώ συνολικά έχουν καταγραφεί 17 εκρήξεις. Οι επιστήμονες όμως πιστεύουν ότι λαμβάνουν χώρα χιλιάδες FRB κάθε μέρα. Αρχικά, ο αστροφυσικός και επικεφαλής του Τμήματος Αστρονομίας του Πανεπιστημίου του Χάρβαρντ, Αβραάμ Λοέμπ, είχε προσπαθήσει να τα εξηγήσει με έναν πιο συντηρητικό τρόπο, λέγοντας ότι ήταν απλώς εκρήξεις στις επιφάνειες των αστέρων στον Γαλαξία. Όμως, κάποια στιγμή «ένα από αυτά εντοπίστηκε σε έναν μικρό γαλαξία, δισεκατομμύρια έτη φωτός από εμάς», δήλωσε χαρακτηριστικά ο Λοέμπ στην αμερικανική έκδοση της Huffington Post.

Με λίγα λόγια, αυτό σημαίνει ότι αυτά FRB προέρχονται από την άλλη άκρη του σύμπαντος και είναι πρέπει να είναι τόσο λαμπερά, όσο τίποτα από αυτά που γνωρίζουμε. Στο τεύχος αυτού του μήνα του επιστημονικού περιοδικού «The Astrophysical Journal Letters», ο Λοέμπ και ο φυσικός Μανασβί Λίνγκαμ εξετάζουν την πιθανότατα αυτές οι γρήγορες εκρήξεις ραδιοκυμάτων να προέρχονται από εξωγαλαξιακούς πολιτισμούς.
«Από την στιγμή που υπάρχουν τόσοι περισσότεροι γαλαξίες από τον δικό μας μας, βγάζει νόημα από στατιστικής άποψης να παρατηρούνται τέτοια φαινόμενο έξω από τον γαλαξία μας, πολύ συχνότερα από ότι μέσα σε αυτόν», δήλωσε στην HuffPost ο Λίνγκαμ.
Οι δύο επιστήμονες δεν ισχυρίζονται ότι τα FRB προέρχονται με βεβαιότητα από εξωγήινους πολιτισμούς, υποθέτουν ότι τέτοιου είδους φαινόμενα ίσως είναι το αποτέλεσμα χρήσης γιγαντιαίων ραδιό-πομπών για να την μεταφορά από τον ένα γαλαξία στον άλλο.
Στο σημείο αυτό να αναφέρουμε ότι ο Λοέμπ είναι επικεφαλής της συμβουλευτικής επιτροπής για το πρότζεκτ «Starshot», που έχει στόχο την αποστολή του διαστημοπλοίου Alpha Centauri σε ένα αστέρι που απέχει τέσσερα έτη φωτός από την Γη. Η ιδέα είναι να χρησιμοποιηθούν ισχυρές ακτίνες λέιζερ πάνω σε λεπτά ηλιακά πανιά που θα φέρουν πάνω από 1.000 ρομποτικά διαστημόπλοια. Ίσως η μέθοδος να διαφέρει από εκείνη που χρησιμοποιούν οι εξωγήινοι, όμως οι άνθρωποι ακόμα κάνουν τα πρώτα τους βήματα στο διάστημα.
«Φαντάζομαι τους εξωγήινους να κάνουν αυτό που που αρχίζουμε τώρα», λέει ο Λοέμπ.
Ο καθηγητής του Χάρβαρντ γνωρίζει ότι ακόμα και η υποθετική συζήτηση γύρω από τους εξωγήινους θα προκαλέσει αντιδράσεις, όμως δεν έχει τις ίδιες προκαταλήψεις.
«Δεν πρέπει να είμαστε προκατειλημμένοι όταν σκεφτόμαστε τι θα μπορούσε να υπάρχει εκεί έξω», εξηγεί.
Ο Λίνγκαμ τονίζει ότι η θεωρία βασίζεται σε υποθέσεις.
*Το κείμενο προέρχεται από
την αμερικανική έκδοση της Huffington Post.
huffingtonpost.gr

          Women occupied only 24% of STEM jobs in 2017 — but there's a way we can fix that      Cache   Translate Page      

Hidden Figures Universal 2

  • The percent of women in science, tech, engineering, and math jobs (STEM) was 24% in 2017.
  • Congressman Marc Veasey (D-TX) is introducing a bill into the US House of Representatives that would direct NASA and the National Science Foundation to provide funding for women and girls of color to pursue careers in STEM.
  • Below, he and Sylvia Acevedo, CEO of The Girl Scouts of USA, describe its importance and relevance in a world where there are stark disparities between women of color and white men in STEM careers. 

Women and minorities have changed the face of space exploration, saved lives through targeted chemotherapy treatments, and built robots that can three-dimensionally print human tissue.

Yet, these trailblazers often remain "hidden figures," and their discoveries and accomplishments continue to be overlooked. Despite a concerted lack of recognition and a blockbuster hit that details the life of NASA mathematician Katherine Johnson, too many of these women remain in the shadows.

But, we can begin to change this by providing more opportunities in our 21st century workforce for young minority women to pursue science, technology, engineering, and math (STEM) degrees.

That's why Marc Veasey (D-TX) has introduced a bill that will direct NASA and the National Science Foundation (NSF) to provide funding for minority women and girls to pursue careers in STEM. The bill would also create a scholars program for woman of color to pursue degrees in STEM fields.

The Girls Scouts of the USA — run by CEO Sylvia Acevedo — has endorsed this bill. Sylvia — a former rocket scientist — feels privileged to have the opportunity to work every day with girls from minority communities who express their interest in STEM through a number of the organization's STEM programs for girls of color

In addition, it would be a meaningful symbol to have a woman of color, who has risen through her persistence, tenacity, and whip-smart legislative acumen, continue to exercise leadership on these issues in the House of Representatives. Congresswoman Eddie Bernice Johnson, the Democratic ranking member of the Committee on Science, Space, and Technology, is in line to be the first African American Chairwoman of the committee.

If we take a step back, we can see that STEM subjects are not simply taught in a classroom; they are critical fields that drive our economy, motivate scientists around the world, and push the next generation to explore uncharted territory.

So why are there still such stark disparities between white men and minority women in STEM careers? For one clear example, look to the medical field. The number of Latinx physicians has declined by 22 percent since 1980, despite Latinxs being one of the largest growing populations in the United States. Meanwhile, black women make up only two percent of doctors in the United States, equating to less than seven percent of African Americans who received medical degrees in the United States in 2015.

The contributions of women of color to STEM fields and society at-large are vast. From Mamie Phipps Clark, whose work was cited in the Brown v. Board of Education case, to Jane Cooke Wright, director of cancer research at 33 years old and known widely as the creator of targeted chemotherapy treatments. It's imperative that we highlight these women, not only celebrate their achievements, but also to create powerful female role models who serve as proof that all girls, regardless of race or age, have a pathway forward in STEM. 

Ongoing, systemic disparities between men and women, as well as white and minority students, are why organizations like Girls Scouts and others, including Black Girls Code and the Kapor Center have championed inclusion and creativity. But to provide STEM programs for minority girls across the country, we need the resources and funding. This bill provides opportunities for more girls to achieve STEM degrees and also creates public/private partnerships that focus on growing opportunities for girls in STEM careers.

marc veasey

The time is now for our nation's girls to grow into astrophysicists, astronauts, computer scientists, and Noble winners in the sciences. That's why, on Ada Lovelace Day, we stand with these women and pledge our commitment to fighting for girls of color and their right to seek out fulfilling, prestigious careers in STEM.

Representative Marc Veasey (D-TX) is the ranking member on the Subcommittee on Energy in the Science, Space, and Technology Committee. Sylvia Acevedo is the CEO of Girl Scouts of the USA. 

SEE ALSO: NASA names new building after 'Hidden Figures' math genius Katherine Johnson

Join the conversation about this story »

NOW WATCH: The 5 most extreme newborns in the animal kingdom


          Postdoctoral Fellow - Pulsar Astrophysics - WVU Research Corporation - Morgantown, WV      Cache   Translate Page      
The West Virginia University Research Corporation is seeking applications for a Postdoctoral Fellow – Pulsar Astrophysics....
From West Virginia University - Thu, 04 Oct 2018 16:06:11 GMT - View all Morgantown, WV jobs
          The threat of Centaurs for the Earth      Cache   Translate Page      
The threat of Centaurs for the Earth#source%3Dgooglier%2Ecom#https%3A%2F%2Fgooglier%2Ecom%2Fpage%2F%2F10000 Vienna, Austria (SPX) Oct 10, 2018

The astrophysicists Mattia Galiazzo and Rudolf Dvorak from the University of Vienna, in collaboration with Elizabeth A. Silber (Brown University, USA) investigated the long-term path development of Centaurs (solar system minor bodies which originally have ... Reported by Space Daily 9 hours ago.
          Distributions of Pseudo-Redshifts and Durations (Observed and Intrinsic) of Fermi GRBs      Cache   Translate Page      
arXiv:1810.04124
Astrophys.Space Sci. 363 (2018) 223

by: Zitouni, Hannachi
Abstract:
Ever since the insightful analysis of the durations of GRBs by [Kouveliotou:93], GRBs have most often been classified into two populations: "short bursts" (shorter than 2.0 seconds) and "long bursts" (longer than 2.0 seconds). However, recent works have suggested the existence of an intermediate population in the bursts observed by the Swift satellite. Moreover, some researchers have questioned the universality of the 2.0-second dividing line between short and long bursts: some bursts may be short but actually result from collapsars, the physical mechanism behind normally long bursts, and some long ones may originate from mergers, the usual progenitors of short GRBs. In this work, we focus on GRBs detected by the Fermi satellite and study the distribution of their durations measured in the observer's reference frame and, for those with known redshifts, in the bursts' reference frames. However, there are relatively few bursts with measured redshifts, and this makes an accurate study difficult. To overcome this problem, we follow [Zhang:2018] and determine a "pseudo-redshift" from the correlation relation between the luminosity $L_p$ and the energy $E_p$, both of which are calculated at the peak of the flux. Interestingly, we find that the uncertainties in the quantities observed and used in the determination of pseudo-redshifts, do affect the precision of the individual results significantly, but they keep the distribution of pseudo-redshifts very similar to that of the actual ones and thus allow us to use pseudo-redshifts for our statistical study. We use the reduced chi-square and the maximization of the log-likelihood to statistically analyze the distribution of Fermi GRB durations. Both methods show that the distribution of the observed and the intrinsic bursts durations are better represented by two groups, rather than three.
          10/10/2018: NEWS / THE LAST PAGE: Yesterday's solution      Cache   Translate Page      
Across 1. Piste 4. Arcadia 8. Reinforcement 10. Ropes 11. Gong 12. Wish 16. Aloof 17. Encyclopaedic 19. Solvent 20. Rebel Down 1. Parking meters 2. Sei 3. Effort 4. Abrupt 5. Cheese 6. Dreamlike 7. Astrophysical 9. Canonical 13. Gauche 14. Cop-out 15....
          Observations challenge cosmological theories      Cache   Translate Page      

Recent observations create a puzzle for astrophysicists: since the big bang, less galaxy clusters have formed over time than was actually expected.

The post Observations challenge cosmological theories appeared first on Astrobiology Magazine.


          Astronomie: Gasnebel entpuppt sich als Relikt exotischen Sterncrashs      Cache   Translate Page      
Im Jahr 1670 fiel einem Mönch ein neuer Lichtfleck im Sternbild Fuchs auf. Erst jetzt haben Astrophysiker entschlüsselt, was damals im System CK Vulpeculae geschehen ist.
          Blind Astronomer 'Touches' The Stars      Cache   Translate Page      
Dr Nicolas Bonne dreamed of exploring Galaxies ever since he was a little boy watching stairs from his home in Australia. He chose to pursue a career in astronomy when he was only 5 years old and is currently leading a project in the UK that lets blind and visually impaired people ‘feel’ the universe. With it, he hopes to encourage more young people to study astrophysics. But studying such a visual science was not always easy for Dr Bonne who’s been visually impaired since birth. Fortunately today visually impaired people can access technology that makes learning astronomy more accessible. Dr Bonne caught up with RNIB Connect Radio’s Simon Pauley to tell us more about how technology changed over the years and what that means for future VI astronomers.
          The threat of Centaurs for the Earth      Cache   Translate Page      
Vienna, Austria (SPX) Oct 10, 2018
The astrophysicists Mattia Galiazzo and Rudolf Dvorak from the University of Vienna, in collaboration with Elizabeth A. Silber (Brown University, USA) investigated the long-term path development of Centaurs (solar system minor bodies which originally have orbits between Jupiter and Neptune). These researchers have estimated the number of close encounters and impacts with the terrestrial pl
          National Academies Call for More Astrobiology at NASA      Cache   Translate Page      

This post is adapted from a press release from the National Academies:

NASEM Logo

To advance the search for life in the universe, NASA should support research on a broader range of biosignatures and environments and incorporate the field of astrobiology into all stages of future exploratory missions, says a new congressionally mandated report from the National Academies of Sciences, Engineering, and Medicine.

Astrobiology, the study of the origin, evolution, distribution, and future of life in the universe, is a rapidly changing field, especially in the years since the publication of NASA's Astrobiology Strategy 2015. Recent scientific advances in the field now provide many opportunities to strengthen the role of astrobiology in NASA missions and to increase collaboration with other scientific fields and organizations. The report finds that these changes necessitate an updated science strategy for astrobiology.

The committee that authored the report found that the lines of evidence we use to look for current and past life on Earth and beyond, called biosignatures, needs expansion. An updated, more sophisticated catalog and framework will be important to enhance our ability to detect both life that might be similar to terrestrial life, and potential life that differs from life as we know it. The latter will be enabled by investigating novel "agnostic" biosignatures — signs of life that are not tied to a particular metabolism or molecular "blueprint," or other characteristics of life as we currently know it.

A comprehensive framework could also aid in distinguishing between biosignatures and abiotic (non-living) phenomena, and improve understanding of the potential for biosignatures to be preserved (or not) over long planetary time-scales. The report highlights the need to include in situ detection of energy-starved or otherwise sparsely distributed life such as chemolithotrophic or rock-eating life. In particular, the report found that NASA should focus on research and exploration of possible life below the surface of a planet in light of recent advances that have demonstrated the breadth and diversity of life below Earth's surface, the nature of fluids beneath the surface of Mars, and the likelihood of life-sustaining geological processes in planets and moons with subsurface oceans. A renewed focus on how to seek signs of subsurface life will inform astrobiology investigations of other rocky planets or moons, ocean or icy worlds, and beyond to exoplanets.

The report emphasizes the need for NASA to ramp up efforts in developing mission-ready life detection technologies to advance the search for life. For studies of life on planets outside of this solar system, the agency should implement technologies in near-term ground- and space-based direct imaging missions that can suppress the light from stars. The specialized measurements, equipment, and analysis required to take full advantage of space missions include some that exist outside of traditional space science fields, highlighting the need for interdisciplinary, non-traditional cooperation and collaboration with organizations outside of NASA, the report says.

So far, planning, implementation, and operations of planetary exploration missions with astrobiological objectives have tended to be more strongly defined by geological perspectives than by astrobiology-focused strategies. The committee recommended the integration of astrobiology into all mission stages, from inception to development and operations. Collaboration with private, philanthropic, and international organizations, especially international space agencies, is also crucial to achieving the objectives of searching for life in the universe.

The committee also pointed out that adopting an interdisciplinary approach to astrobiology would produce a more complete picture of life on Earth as well as other planets. Integrating the physical, chemical, biological, geologic, planetary, and astrophysical sciences into the study of astrobiology will better show the relationship between life and its environment and how each changes, incorporating a new, dynamic view of habitability that includes consideration of multiple parameters. NASA should continue to actively seek new mechanisms to reduce the barriers to these potential collaborations, the report says.

The study was sponsored by NASA. The National Academies of Sciences, Engineering, and Medicine are private, nonprofit institutions that provide independent, objective analysis and advice to the nation to solve complex problems and inform public policy decisions related to science, technology, and medicine. They operate under an 1863 congressional charter to the National Academy of Sciences, signed by President Lincoln.


          Astroboffins discover that when white and brown dwarfs mix the results are explosive      Cache   Translate Page      

350-year monkish mystery could be down to a merger

Astrophysicists have finally solved a mystery lasting almost 350 years to uncover the first documented merger between a white and brown dwarf star.…


          399 - Neil deGrasse Tyson: What is The Truth? The Real Science of Inquiry      Cache   Translate Page      

“If the world ends it's because people in power didn't listen to the warnings of physicists,” Neil deGrasse Tyson said. Neil is the world’s window into physics. And he just came out with a new book “Accessory to War: The Unspoken Alliance Between Astrophysics and the Military.” He told me how physicists think. And this kind of thinking can be used to make you a better communicator, help you to avoid conflict, make smart decisions, but he also told me odd stories. Like how Columbus used astrophysics to exploit power, why E = mc2  gave us atomic bombs, who the first trillionaire will be, why physics stops Neil from having normal fights with his wife and more. If you don’t think you "get" science, you’ll be a new person after this podcast.

 

Links and Resources

Accessory to War: The Unspoken Alliance Between Astrophysics and the Military by Neil deGrasse Tyson

StarTalk radio (Neil’s podcast)

Astrophysics for People in a Hurry by Neil  deGrasse Tyson

Death by Black Hole: And Other Cosmic Quandaries by Neil deGrasse Tyson

Origins: Fourteen Billion Years of Cosmic Evolution by Neil deGrasse Tyson

Astrophysics for Young People in a Hurry by Neil deGrasse Tyson 

Cosmos: A Spacetime Odyssey

 
Also Mentioned

The Hayden Planetarium at the American Museum of Natural History 

Richard Holbrooke

Key and Peele’s parody on Neil deGrasse Tyson

My interview with Naveen Jain - Ep. 135  “The Billionaire Who Wants to Go to The Moon”

Carl Sagan

Scientific American

 

I write about all my podcasts! Check out the full post and learn what I learned at jamesaltucher.com/podcast.

 

Thanks so much for listening! If you like this episode, please subscribe to “The James Altucher Show” and rate and review wherever you get your podcasts:

Apple Podcasts

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          'Ask a Spaceman': 15 Minutes Can Change a Star Forever      Cache   Translate Page      
What can you do in 15 minutes? Maybe read a few articles or watch a few videos online. But as astrophysicist and Space.com columnist Paul Sutter explains, 15 minutes is enough time for a particular kind of star to transform into a neutron star.
          World - Astrophysicist Neil deGrasse Tyson talks turning 60, teleportation and a new book      Cache   Translate Page      
World-renowned astrophysicist Neil deGrasse Tyson has brought science to the masses and he is back on WCL to chat about his latest book, "Accessory to War." The best-selling...


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