42:38 Would there be a Universe without us to observe it? |, Hubble Detects Iron and Iron Oxide on Asteroid Psyche, SOFIA Detects Molecular Water on Sunlit Surface of Moon, Paleontologists Identify New Species of Plesiosaur, Ancient Maya Used Zeolite and Quartz to Filter Drinking Water, New Images Show OSIRIS-REx’s Sample Collection on Bennu, ALMA Spots Volcanic Plumes on Jupiter’s Moon Io, Massive Galaxies in Early Universe were More Mature than Previously Thought, Ring-Like Structures Spotted around Protostar IRS 63, Astronomers Identify Closest Stars that Could See Earth as Transiting Exoplanet, Large Tides Played Important Role in Evolution of Bony Fish and Early Tetrapods, Study Suggests, Astronomers Analyze Atmosphere of Ultrahot Neptune, OSIRIS-REx Collects Sufficient Sample of Asteroid Bennu’s Regolith, Researchers Create High-Stringency Blueprint of Human Proteome, Clovis Stone Tools Were Made Only During 300-Year Period: Study, Membrane-Winged Dinosaurs Yi and Ambopteryx were Poor Gliders, Building Blocks of Language Evolved at least 40 Million Years before Language Itself, Study Shows, Flavanol-Rich Diet Could Help Lower Blood Pressure, Consciousness is Brain’s Information-Rich Energy Field, Remarkable New Theory Says, Tubarial Glands: New Organ Discovered in Human Body, Physicists Propose New Theory on Origin of Dark Matter, Archaeologists Discover Cat Geoglyph at Nazca Lines Site, OSIRIS-REx Attempts to Collect Sample of Near-Earth Asteroid Bennu, Astronomers Find Shell Structures in Milky Way Galaxy for First Time. Image: This artist’s impression shows LTT 9779b near the star it orbits, and highlights the planet’s ultra-hot (2000 Kelvin) day-side and its quite-toasty night-side (around 1000 K). It orbits LTT 9779, a two-billion-year-old Sun-like star located 260 light-years away in the constellation of Sculptor. For anyone wanting to read in more detail, free access to the papers is available here https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G, Weekly email newsletter: Image credit: Ethen Schmidt, Kansas University. “This planet is so intensely irradiated by its star that its temperature is over 3,000 degrees Fahrenheit and its atmosphere could have evaporated entirely. 51:37 Are there any full views of the Earth from satellites? It is 2.8 million miles from the Sun or 30 times the distance of the Earth to the Sun. In a companion study, also published in the Astrophysical Journal Letters, the team found signs that point to the atmosphere of LTT 9779b having a higher level of heavy elements than expected. But if there’s one thing we’ve learned, it’s that new exoplanets always find ways to surprise us.
Although Neptune is much more distant than Uranus from the Sun, receiving 40% less sunlight, temperatures on the surface of the two planets are roughly similar. That makes this unusual discovery (lead author Ian Crossfield calls it a “planet that shouldn’t exist”) a useful test case for future work, because the goal of finding the biosignatures of living worlds won’t be achieved without drilling down from inhospitable places like LTT 9779b. 1 (26 October 2020). Cold temperatures allow methane clouds to condense in the highest layers of the atmosphere. Join our 836 patrons! 49:23 Could we start building our Dyson Sphere now? Phase Curves of Hot Neptune LTT 9779b Suggest a High-metallicity Atmosphere. A larger gas giant like one of the ‘hot Jupiters’ we began finding in the beginning of the exoplanet hunt can hang on to an atmosphere in breathtaking proximity to its star, but a smaller world might lose its gases and become an airless rocky place. The observations confirmed an atmospheric presence and enabled a measurement of the planet’s very high temperature — … Untangling this information gives us a way to examine heat transport from the day side to the night side. 23:22 Why didn't the Universe collapse again? Neptune is the most distant planet from the Sun, with temperatures that plunge down to 55 Kelvin, or -218 degrees Celsius. Our Book is out! Here’s an article about how Neptune’s south pole is the warmest part of the planet, and here’s more information about the atmosphere on Neptune.
To investigate its atmospheric composition and shed further light on LTT 9779b’s origin, Dr. Dragomir and colleagues obtained secondary eclipse observations with Spitzer’s Infrared Array Camera. A few years later, however, the Hubble Space Telescope failed to see the Great Dark Spot, but it did see different storms. This site rocks the Classic Responsive Modded Skin for Thesis. 45:39 What's the difference between the SpaceX suits and the shuttle suits? In a KU news release, Crossfield added: “Infrared light tells you the temperature of something and where the hotter and cooler parts of this planet are — on Earth, it’s not hottest at noon; it’s hottest a couple of hours into the afternoon. Credit: Ethen Schmidt | University of Kansas. The cold temperatures might decrease the friction in the system, so that winds can get going fast on Neptune. The planet reflects no light during a phase known as secondary eclipse, when it is hidden from view, whereas it reflects some light shortly before and after this phase. ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 55:45 Is interstellar space cold or hot? The observations confirmed an atmospheric presence and enabled a measurement of the planet’s very high temperature — 2,032 degrees Celsius (3,690 degrees Fahrenheit). Credit: ESA. A Key Biosignature Called Phosphine has been Discovered in Venus' Atmosphere. We hope it will be the prototype for studying these kinds of objects with the upcoming James Webb Space Telescope. The Dragomir et al. 00:00 Start “This ultrahot Neptune is a medium-sized exoplanet that orbits very close to its star, but its low density indicates that it still has an atmosphere weighing almost 10% of the planet’s mass,” said Dr. Diana Dragomir, an astronomer at the University of New Mexico and lead author of a paper published in the Astrophysical Journal Letters. https://www.youtube.com/channel/UCUHI67dh9jEO2rvK–MdCSg, Support us at: https://www.patreon.com/universetoday The first of two just released papers also notes that this is the first spectral atmospheric characterization of a TESS planet. In an email yesterday, Dr. Crossfield (University of Kansas) put his work on this world in context: What surprised us the most about LTT9779b is that this planet’s atmosphere seems quite different from those of bigger gas giants. Temperature On Neptune. It has an average temperature of -214 degrees Celsius;-353 degrees Fahrenheit, however Uranus is the coldest ice giant, and for that fact the coldest of all planets in the solar system. and here So why can the winds on Neptune reach such huge speeds? This is additionally intriguing because the two similarly-sized planets in our Solar System, Neptune and Uranus, are primarily composed of light elements like hydrogen and helium. Depending on a planet’s position with respect to its host star, the total light collected by a telescope will include a varying fraction of light reflected off the planet, in a similar manner to how we experience the phases of the Moon. Neptune has an average temperature of -373 degrees Fahrenheit, while the clouds that make up the planet's atmosphere range between -240 and -330 degrees Fahrenheit.
Credit: Ethen Schmidt | University of Kansas. 11:31 Could space be infinite at the Big Bang? Thanks for your interest! Future phase curve and eclipse observations of LTT 9779b and other similar planets will provide the impetus for the next generation of global circulation modeling of Neptune-size planets, supporting similar observations of many such objects with JWST, ARIEL, and future observatories.
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