What is interesting is how different these features look from those found in older disks: the rings are quite shallow, and very difficult to pick out, in contrast to the prominent features found in older disks. A much larger set of observations of young disks is needed to see whether this is typical, but if it is, it could provide important clues about the planet-formation process and when it begins. Young planets might be expected to carve out large gaps, so perhaps Segura-Cox et al .
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Andrews, S. M. Annu. Rev. Astron. Astrophys . https://doi.org/10.1146/annurev-astro-031220-010302 (2020).
While you're here, how about this:
Hayes, Lunine to chair Planetary Science 10-year survey panels | Cornell Chronicle
Cornell astronomers Alex Hayes and Jonathan Lunine have been named chairs for two of the six panels for the Planetary Science and Astrobiology Decadal Survey 2023-2032.
Hayes, associate professor of astronomy in the College of Arts and Sciences and director of the Cornell Center for Astrophysics and Planetary Science, will chair the Panel on Ocean Worlds and Dwarf Planet Systems . Lunine, the David C. Duncan Professor in the Physical Sciences and chair of the Department of Astronomy (A&S), will chair the Panel on Giant Planet Systems . Both are fellows of the Carl Sagan Institute .
Planet Mars makes a close pass by the Earth | WHAM
Strange alien planet has weird orbit and scorching temperatures | Space
Europe's new telescope studying alien planets has created its first detailed portrait of a world, and it's a weird one: hot and tilted around a warped star.
The European Space Agency (ESA) launched the Characterizing Exoplanet Satellite, nicknamed CHEOPS , in December; the spacecraft began science observations in April. CHEOPS isn't designed to discover alien planets, but rather to inform scientists so that they can construct portraits of the worlds. And, in the mission's first published results, scientists on the CHEOPS mission have done just that, forming a detailed picture of the planet WASP-189b, which was first detected in 2018.
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Astronomers Reveal The Youngest Baby Planet Structures We've Ever Seen
Stars are born as dense clouds of interstellar material collapse under their own gravity, spinning into flat discs that eventually spool into baby stars. Now, for the first time, hints of planet formation have been detected around a protostar so young, the cloud of leftover dust and gas is still collapsing into it, and the disc still forming.
This is the earliest detection of such structures in a protostellar ring, and it suggests that planet formation starts earlier than we thought, before the nascent system is even 500,000 years old.
Billion-year-old dunes reveal history of Mars | Space | EarthSky
The discovery of near-perfectly preserved billion-year-old Martian dunes is helping scientists to unravel the geologic and climatic history of the red planet.
Here is a region on Mars where sand dunes have been compacted over time into solid rock. This image, taken by the HiRISE high-resolution camera aboard NASA's Mars Reconnaissance Orbiter, zooms in on the now-solid sand dunes in Melas Chasma, part of the extensive Valles Marineris canyon network on the red planet. Image via NASA/ JPL/ Planetary Science Institute .
Rogue Earth-mass planet discovered freely floating in the Milky Way without a star
Finding something in deep space that emits no light of its own is extremely challenging. But two organizations are doing just that. They're the Optical Gravitational Lensing Experiment (OGLE) collaboration and the Korean Microlensing Telescope Network (KMTN) collaboration.
Now, a team of scientists from both groups has announced the discovery of a low-mass rogue planet. There are no stars near it, and its distance from Earth is unconfirmed. The team says it proves that the microlensing technique is effective at finding Earth-mass planets that are free-floating in space.
Protectors of Earth! (and Other Worlds) | The Planetary Society
Protecting worlds like Earth and Mars from microscopic invaders carried by human and robot visitors was just one of the scores of topics covered at this year's Humans to Mars summit. Mat Kaplan moderated a panel featuring planetary scientist and New Horizons mission principal investigator Alan Stern, NASA associate administrator Mike Gold, and NASA planetary protection officer Lisa Pratt.
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To celebrate its 40th anniversary, how many 25-meter dishes make up the Very Large Array in New Mexico? There could be 2 possible answers, either of which will be accepted.
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