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planetary evolution

A red-orange star with dark circles in front
Posted inNews

Hunting for Planets Around Old, Anemic Stars

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 28 August 20193 April 2023

Can a star make planets with 10% of what the Sun had to work with? A synergy between two powerhouse survey telescopes is helping astronomers find that answer.

A rocky planet near a red star with two stars in the background
Posted inNews

Nearest Star System May Have a Second Planet

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 19 August 20193 April 2023

The exoplanet candidate, tentatively named Proxima c, would be a frozen snowball.

Illustration of oblong planet in front of bright star
Posted inNews

Ultrahot Exoplanet Bleeds Heavy Metals into Space

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 5 August 201931 October 2022

The planet is also shaped like a football (the American kind).

Images of blue circles around the yellowballs
Posted inNews

The “Yellowball” Catalog and the Citizen Science That Helped Define It

Rachel Crowell, Science Writer by Rachel Crowell 26 July 20195 January 2023

The online community of the Milky Way Project citizen scientists helped scientists identify compact star-forming regions now known as yellowballs.

Satellite image of a moon and rings of Saturn
Posted inNews

The Cassini Mission May Be Over, but New Discoveries Abound

Sarah Derouin, Science Writer by Sarah Derouin 17 July 201917 February 2023

New analysis of high-resolution images shows ring textures and disruptions within Saturn’s rings in unprecedented detail.

The Gemini South telescope at night, with the starry Milky Way in the background
Posted inNews

Giant Planets and Brown Dwarfs Form in Different Ways

Katherine Kornei, Science Writer by Katherine Kornei 11 July 201915 June 2022

Once thought to be part of the same population, planets larger than Jupiter and “failed stars” likely grow via different mechanisms, the Gemini Planet Imager Exoplanet Survey has shown.

Close-up, black-and-white satellite image of the lunar landscape
Posted inNews

The Quaking, Shrinking Moon

Rachel Crowell, Science Writer by Rachel Crowell 30 May 201915 November 2022

New evidence suggests that the Moon may still be tectonically active.

Illustration of a protoplanetary disk surrounding a young star
Posted inNews

Passing Object May Have Kicked Up Dust from a Planetary Disk

Nola Taylor Redd, Science Writer by Nola Taylor Tillman 16 May 20194 April 2023

The elongated tail of the SU Aurigae protoplanetary disk was likely formed as a result of a flyby from a substellar object.

Charred and crumbling caldera overlook labeled Fountains of Fire
Posted inNews

Hawaiian Volcano Observatory Searches for a New Home

Ilima Loomis, Science Writer by Ilima Loomis 12 April 201917 January 2023

Seismic activity during the eruption of Kīlauea damaged the Hawaiian Volcano Observatory beyond repair. Now officials are looking for a new site.

Artwork by Anastasia Grigoryeva depicting solar wind as it affects the Martian atmosphere
Posted inResearch Spotlights

How Mars Lost Steam

by E. Underwood 11 April 201915 March 2023

Solar winds are not the main culprit in stripping the planet’s atmosphere, a new study suggests.

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