Enter your email address to receive blog posts from Centauri Dreams via email: Further Astronomical and Astronautical Resources. Such analysis has been performed for hot Jupiters, but as the Crossfield et al. In the first paper ( https://arxiv.org/pdf/2010.12745.pdf ) they say the planet has an irradiation temperature of 2770 K, an equilibrium temperature of 1960, and an observed nightside temperature of 700 +- 430 K. Yes, it’s a hot Neptune with a thick atmosphere nearly an order of magnitude away from the habitable zone but that doesn’t rule out that they could have a white Christmas! 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. 30:11 Will the magnetic reversal be devastating? |, 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. https://arxiv.org/pdf/2010.12744.pdf. 23:22 Why didn't the Universe collapse again? “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.”, “But on this planet, it’s actually hottest just about at noon. 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. The first of two just released papers also notes that this is the first spectral atmospheric characterization of a TESS planet. Neptune is an ice giant that is primarily made up of a scalding-hot, dense mixture of water, methane and ammonia that likely sits on top of a solid, Earth-sized core. The atmospheres of hotter, larger and more readily characterizable planets let us hone our techniques and teach us how to proceed. LTT 9779b had us scratching our heads, but the fact that it has an atmosphere gives us a rare way to investigate this type of planet, so we decided to probe it with another telescope.”. Thanks for your interest! … During its 1989 flyby, NASA’s Voyager 2 spacecraft discovered the Great Dark Spot on Neptune. “For the first time, we measured the light coming from this planet that shouldn’t exist,” said Dr. Ian Crossfield, an astronomer in the Department of Physics and Astronomy at the University of Kansas. So why can the winds on Neptune reach such huge speeds? But on this planet, it’s actually hottest just about at noon. and here 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. 44:27 What rocket launch do I want to see? 11:31 Could space be infinite at the Big Bang? Chad Weber – [email protected], Support Universe Today podcasts with Fraser Cain, The Guide to Space is a series of space and astronomy poddcasts by Fraser Cain, publisher of Universe Today, Episode 692: Open Space 91: Any Updates on Venus? Credit: Ethen Schmidt | University of Kansas. A few years later, however, the Hubble Space Telescope failed to see the Great Dark Spot, but it did see different storms. Just like Jupiter and Saturn, Neptune has bands of storms that circle the planet. Space 'Hot Neptune' exoplanet discovered that's so scorching its atmosphere 'shouldn't exist' Researchers from the University of Kansas have analysed the … Crossfield and colleagues show us a planet so close to its star that it reaches temperatures in the range of 1650℃. “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. Abstract. Researchers performed the first spectral atmospheric characterization and global temperature map of any TESS planet that has an atmosphere and is classified as a hot Neptune. 17:08 How does inflation improve the Big Bang? Now that Pluto has been demoted from a planet to a dwarf planet, Neptune is now the most distant planet in the solar system. Neptune is the most distant planet from the Sun, with temperatures that plunge down to 55 Kelvin, or -218 degrees Celsius. 51:37 Are there any full views of the Earth from satellites? LTT 9779b stands out among the planets thus far surveyed, as the Crossfield et al. Image: The phase curve method to study extrasolar planets. Abstract available. 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). But although our hot Neptune is the same temperature as many of the big “hot Jupiters” that have been studied before, its atmosphere looks quite different. We have written many articles about Neptune for Universe Today. “LTT 9779 is one of those super-exciting targets, a very rare gemstone for our understanding of hot Neptunes,” said Professor Björn Benneke, an astronomer at the Institute for Research on Exoplanets and the Université de Montréal. Astronomers have discovered an exoplanet of an extremely rare type called a hot Neptune. ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 27:03 OSIRIS-REx update Primordial Black Holes, Episode 687: Open Space 89: Scott Gaudi and the HabEx Mission, Episode 686: Q&A 129: Did Life Get a Ride to Venus from our Missions? LTT 9779b has an orbital period of 19 hours and is located in the so-called ‘Neptunian desert’, a region devoid of planets when we look at the population of planetary masses and sizes. 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. Image credit: Ethen Schmidt, Kansas University. 54:47 Have any black holes evaporated yet? The planet’s mean density is similar to that of Neptune and its atmosphere makes up around 9% of the total planetary mass. Astronomers have clocked winds on Neptune traveling at 2,100 km/hour. Towards the planet's equator, temperatures can get as cold as -218 degrees Celsius, while temperature at the South Pole is about 10 degrees Celsius warmer.

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