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planetary atmospheres

A lava world orbiting close to a yellow star
Posted inNews

A Magma Ocean Fuels This Exoplanet’s Atmosphere

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 30 May 202430 May 2024

The finding is an atmospheric first for astronomers but not for the planet.

A green Acaryochloris marina culture in a conical flask
Posted inNews

Red-Light-Loving Bacteria Could Expand the Search for Life

by Kristel Tjandra 22 May 202422 May 2024

Scientists are uncovering genes responsible for oxygenic photosynthesis in cyanobacteria to shift the search for potentially habitable worlds.

An orange-red planet on a starry background with concentric rings of light on its right-facing horizon
Posted inNews

Rare “Glory” Possibly Seen on Exoplanet’s Horizon

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 8 April 20248 April 2024

This rainbow-like atmospheric phenomenon depends on a very specific set of circumstances. It is common on Earth and incredibly rare beyond it.

Artist’s rendering of NASA’s Parker Solar Probe during a fly-by of Venus
Posted inNews

Lightning Struck Down as Source of a Venus Whistler

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 13 December 202313 December 2023

Whistlers were a key piece of evidence in favor of Venusian lightning. New measurements question the connection.

A portion of a cream-colored planet covered with pale swirls and partially in shadow is shown against the blackness of space broken by pinpoints of light. A hazy atmosphere is visible around the planet.
Posted inNews

These Four Exoplanets Have Wild, Rocky Weather

by Elise Cutts 7 December 20237 December 2023

On many exoplanets, conditions are so exotic that minerals form clouds and fall as rain. Recent studies revealed the rocky weather on these four exoplanets in more detail than ever before.

A flaming asteroid entering a planet’s atmosphere
Posted inNews

Meteor Impact Site Holds 200-Million-Year-Old Atmospheric Snapshot

by Elise Cutts 19 October 202329 November 2023

Minerals formed in short-lived hydrothermal systems set off by a meteor impact in France preserved information about noble gases in the ancient atmosphere.

A brownish and gray image of the ringed planet Saturn appears against a black background, with portions of its northern hemisphere and rings overlain with colorful new spacecraft images.
Posted inResearch Spotlights

James Webb Space Telescope Captures Saturn’s Changing Seasons

Sarah Stanley, Science Writer by Sarah Stanley 28 September 202328 September 2023

Unprecedented images reveal how Saturn’s atmosphere is evolving as summertime winds down in its northern hemisphere.

A bright yellow circle on a purple background. The circle is surrounded by wispy tails of orange-red clouds coming from a small yellow circle on the left of the image.
Posted inNews

A Planet Is Dramatically Losing Its Atmosphere

Katherine Kornei, Science Writer by Katherine Kornei 24 July 202324 July 2023

Helium that was once part of the atmosphere of the extrasolar planet HAT-P-32b is being ripped away and forming two giant streamers of gas several million kilometers long.

Roughly 20 people stand amid sand dunes under a clear blue sky and near a metal framework equipped with scientific instruments.
Posted inScience Updates

The Nitty-Gritty Forces That Shape Planetary Surfaces

by Brian Jackson, Serina Diniega, Timothy Titus, Alejandro Soto and Edgard Rivera-Valentin 15 June 202315 June 2023

Scientists are coming up with ingenious ways to compare terrestrial sand dunes, dust storms, and rain with their counterparts on Mars and Titan.

A satellite image of the surface of Mars showing snaking channels and other water-sculpted features
Posted inNews

Asteroid Impacts Could Have Warmed Ancient Mars

Katherine Kornei, Science Writer by Katherine Kornei 17 April 202317 April 2023

Hydrogen released during large impacts might have boosted Mars’s surface temperature above freezing for thousands or even millions of years, enabling liquid water to flow over the Red Planet.

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