The End of Everything (Astrophysically Speaking) - with Katie Mack
Guiding us through major concepts in quantum mechanics, cosmology, string theory and more, Katie Mack describes how small tweaks to our incomplete understanding of reality, can result in vastly different endings for our universe. Katie's book "The End of Everything" is available now: https://geni.us/tPqg
Watch the Q&A: https://youtu.be/FEfhUsZBrGk
Subscribe for regular science videos: http://bit.ly/RiSubscRibe Katie Mack is a theoretical astrophysicist and one of the most popular scientists on Twitter, with more than 330,000 followers. Throughout her career as a researcher at Caltech, Princeton, Cambridge, Melbourne and now North Carolina State University, she has studied dark matter, black holes, cosmic strings and the formation of the first galaxies. As a science writer, she has been published by Slate, Time, and Scientific American, as well as having a regular column in Cosmos magazine. ---
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What Saturn's most mysterious moon could teach us about the origins of life | Elizabeth Turtle
Visit http://TED.com to get our entire library of TED Talks, transcripts, translations, personalized talk recommendations and more. NASA's Dragonfly -- a robotic rotorcraft-lander that's designed to hop across the surface of an extraterrestrial body -- is set to voyage deep into the solar system to explore Titan, Saturn's largest moon, in 2026. Planetary scientist Elizabeth "Zibi" Turtle shares how studying this mysterious moon that's thought to resemble the early Earth could bring us closer to understanding the habitability of other planets -- and the origin of life itself. The TED Talks channel features the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and more. You're welcome to link to or embed these videos, forward them to others and share these ideas with people you know. For more information on using TED for commercial purposes (e.g. employee learning, in a film or online course), submit a Media Request here: http://media-requests.TED.com Follow TED on Twitter: http://twitter.com/TEDTalks
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Chiende Lee: HO Puppis: A Sub-Luminous Hot Star with IW-And Type Light Curve
HO Puppis (HO Pup) was considered as a Be star candidate due to its γ Cassiopeiae-type light curve, but lacks spectroscopic confirmation. Using distance measured from Gaia Data Release 2 and the spectral energy distribution (SED) fitting on broadband photometry, the Be star nature of HO Pup is ruled out. In contrast, the SED of HO Pup can be fit well with a hot and sub-luminous star or, possibly, a hot subdwarf. Furthermore, based on the 28,700 photometric data points collected from various time-domain surveys and dedicated intensive monitoring observations, the light curves of HO\,Pup resemble well to the IW And-type stars, exhibiting characteristics such as standstill phase, outbursts and dip events. The light curves of HO Pup display various variability time scales, including outbursts cycles range from 23 to 61 days, variations with periods of 3.9 days and 50 minutes during the standstill phase, and a semi-regular ~14 days for the dip events. We have also collected time!
-series spectra (with various spectral resolutions), at which Balmer emission lines and other expected spectral lines for an IW And-type star were detected, even though some of these lines were also expected to be present on Be stars. Nevertheless, detection of Bowen fluoresces near the outburst phase can be used to discriminate between IW And-type stars and Be stars. Finally, despite only observing for 4 nights, the polarization variation was detected, indicating that HO Pup has intrinsic polarization. 9/16 (Wednesday) 14:20 - 15:20
Careers in Planet Hunting: Ask the Astronomers Live!
What are planets around other stars really like, and what kinds of people devote their careers to studying them?
Interstellar Probe Webinar: Mission Trade Space
This webinar presents the mission concept trade space and show a candidate spacecraft architecture. The presenters will define the trajectory trade space and link it with the operations concept. Additionally, the potential mission telecommunications will be presented along with the trade space on the data downlink strategy.
Jim Kinnison: Concept Study System Engineer, Interstellar Probe Study, JHUAPL
Wayne Schlei: Mission Design Lead, Interstellar Probe Study, JHUAPL
David Copeland: Telecommunications Lead Engineer, InterstellarProbe Study, JHUAPL More info: https://bit.ly/apl-2QLN9T1
Cosmic X-Ray Astronomy Historic Milestones 1960 to 1980
Observations of the universe in X-ray wavelengths with modern technologically advanced observatories is essential to understanding a diverse array of astrophysical objects and processes. Cosmic X-ray astronomy’s rich and early history from the 1960s and 1970s, however, is often neglected. This presentation identifies the pioneers, and principle observatories, technologies and discoveries over this period leading to the Chandra X-ray Observatory and XMM-Newton Observatory that still operate today. A rocket in 1949 with small Geiger counters observed a weak X-ray signal from the Sun’s corona. This initial result led to a long-held view that efforts to detect X-ray sources outside the Solar System would not yield any results and not worth pursuing. In June 1962, however, a rocket launched into the sky from White Sands, New Mexico, would prove that idea wrong, and alter our perspective of the cosmos forever. With instruments designed to observe solar X-rays reflected off the Moon, Riccardo Giacconi and his team detected strong X-ray signals in the constellation Scorpius plus a general background emission (Giacconi et al. 1962). This finding, illustrating that the universe was rich in observable X-ray radiation, galvanised the astronomical community into initiating further space missions, paving the way for the development of more technically-advanced instruments and science. Future missions would include Uhuru, Ariel V, Small Astronomy Satellite 3, HEAO-1, the Einstein Observatory, EXOSAT and others, each improving in sensitivity and precision. Step back in time this evening and enjoy my discussion on the political and technological challenges pioneers faced as observatories evolved into today’s productive satellites. It will change your appreciation of modern astronomical X-ray images.
‘Ever Decreasing Circles’ – An Introduction to Spacecraft Mission Orbits
Speaker: Dr. John Davies, FBIS
Live Streamed Question and Answer Session
(hosted by Alistair Scott)
7pm (BST) Wednesday 2nd September 2020 Dr John Davies will be available to answer questions on the subject of ‘Ever Decreasing Circles’ – An Introduction to Spacecraft Mission Orbits.
John Davies is an astronomer at the UK Astronomy Technology Centre at the Royal Observatory Edinburgh. He has worked with several astronomical satellites, including the Infra-Red Astronomical Satellite (IRAS), and used many large ground-based telescopes for his research programme on comets and asteroids. John is the author of five books, including Astronomy from Space which reviews the design and operation of orbiting observatories. He joined the BIS in the early 1970s.
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At the edge of time: Exploring the mysteries of our universe’s first seconds
Over the past few decades, scientists have made incredible discoveries about how our cosmos evolved over the past 13.8 billion years. But we still know very little about what happened in the first seconds after the Big Bang. In this public lecture, physicist and author Dan Hooper explores this critical gap in our scientific knowledge. He examines how physicists are using the Large Hadron Collider and other experiments to re-create the conditions of the Big Bang and to address mysteries such as how our universe came to contain so much matter and so little antimatter. Could these tools enable us to discover the nature of dark matter and how it was formed in our universe’s first moments? Can we lift the veil on the era of cosmic inflation, which led to the creation of our world as we know it?
Dan Hooper is a senior scientist and the head of the Theoretical Astrophysics Group at Fermilab and a professor of astronomy and astrophysics at the University of Chicago. His research focuses on the interface between particle physics and cosmology, and he is especially interested in questions about dark matter and the early universe. He is the author of three books, including “At the Edge of Time.” To see the schedule of upcoming public lectures at Fermilab, visit:
https://events.fnal.gov/arts-lecture-series/lecture-series/ For more information about Fermilab, go to:
Telescopes.net - Why you need a Focuser for your Telescope
Join Wayne from Starlight Instruments as he explains why you need a focuser for your telescope.
Telescopes.net Greg Marshall talks Cable Management
Greg Marshall from Wa-Chur-Ed observatory talks about cable management but a preview look into a new Power Box product.
Telescopes.net - Chuck talks equipment
Chuck from Chuck's Astrophotography goes through his unopened box and gets serious on using his gear. Join us as we unravel the mess on this light hearted take on all the things that we buy but dont use!
Interstellar Probe Webinar: Voyagers 1 & 2, Where are We Now?
The current interpretations of the Voyager data on the heliosheath and the interface with the local interstellar medium are reviewed, and serious omissions in these interpretations are pointed out. Current conclusions on the global structure of the heliosheath, whether from models or observations, are found to be wanting, resulting in a need for better models and further observations, such as by Interstellar Probe. Panelists
Prof. Lennard Fisk Learn more about the Interstellar Probe: http://interstellarprobe.jhuapl.edu/
Lunar Surface Science Virtual Workshop - Report Out and Wrap Up - R. Watkins, A. Dove
Report Out and Wrap Up
R. Watkins, A. Dove
Lunar Surface Science Virtual Workshop - Discussion 2
Lunar Surface Science Virtual Workshop - The Heimdall Camera System - A. Yingst
The Heimdall Camera System: Turning Eyes on the Lunar Surface
Lunar Surface Science Virtual Workshop - SCALPSS - M. Munk
Lunar Surface Science Virtual Workshop - Electrostatic Dust Analyzer EDA for Character... - X. Wang
Electrostatic Dust Analyzer EDA for Characterizing Dust Transport on the Lunar Surface
Lunar Surface Science Virtual Workshop - Moonba - M. Barker
Moonba: A Micro Rover for a Targeted Investigation of Lunar Regolith
Lunar Surface Science Virtual Workshop - ISRU Excavation and Processing - J. Sanders
ISRU Excavation and Processing
Lunar Surface Science Virtual Workshop - Ext Plume Effects for Landed and Orbital Assets - P Metzger
Extended Plume Effects for Landed and Orbital Assets