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exoplanets

Image of AB Aurigae’s protoplanetary disk shows wispy spirals and a bright blobby protoplanet. A scale shows that the protoplanet’s orbit is about 3 times wider than Neptune’s orbit around the Sun.
Posted inNews

Giant Planet’s Formation Caught in Action

by Jure Japelj 11 April 202225 April 2022

Astronomers took a direct image of a massive protoplanet embedded in a protoplanetary disk. The system provides strong evidence for an as-yet-unconfirmed theory of planet formation.

An artist’s rendering of TOI-2180 b
Posted inNews

At-Home Astronomers Help Discover a New, Unique Exoplanet

by J. Besl 2 March 20222 March 2022

Amateur astronomers sifting through NASA’s public data uncovered a long-orbit gas giant that could help scientists understand how these planets form.

Illustration of an exoplanet in the foreground with other exoplanets and their host star in the distance
Posted inFeatures

Tidally Locked and Loaded with Questions

by Caroline Hasler 17 February 202217 February 2022

Tidally locked planets always present the same face to their host stars. What does this mean for their potential to support life?

A rocky planet and a smaller rocky moon sit on a black background with dark red streaks. The planet in the foreground has a cratered surface and has patches of red, green, gray, and blue rocks. The smaller grayish brown rocky moon in the background is between 10 and 11 o’clock relative to the planet.
Posted inNews

To Make a Big Moon, Start with a Small Planet

by Kimberly M. S. Cartier 10 February 202210 February 2022

Why is our Moon so massive compared with Earth, and how might that configuration happen elsewhere?

Two blocky telescope domes sit on snowy ground, and the band of the Milky Way arcs across the sky. The sky shades from navy at the top to green and orange at the horizon and is studded with stars.
Posted inNews

Five Reasons Geoscience Should Care About Astronomy’s New Road Map

by Kimberly M. S. Cartier 5 November 202121 March 2022

The latest road map to U.S. astronomy’s next decade recommends a smaller space telescope, ground-based facilities, and an institutional effort to create an inclusive and equitable field.

A bright orange ring of dust surrounds a fuzzy orange center that hides the central star of the PDS 70 system. Sitting between the central star and the planet-forming dust disk is a small, bright orange dot that is the young planet PDS 70 c.
Posted inNews

Where Moons Are Made

by Kimberly M. S. Cartier 4 August 202126 April 2022

The young, growing planet PDS 70 c has enough material swirling around it to make at least three Moon-sized moons.

A yellow and orange star in the center of the image. A vertical line through the center of the star indicates the star’s spin axis, and two white arrows indicate that the star rotates clockwise. An exoplanet transits the star as a dark circle. Its orbit cuts across the star’s surface as a white line with arrows indicating that it moves from top to bottom.
Posted inNews

Peculiar Planets Prefer Perpendicular Paths

by Kimberly M. S. Cartier 29 July 202128 September 2021

Some exoplanets orbit their stars from pole to pole instead of across the equator. Why do they do that?

This illustration shows an exoplanet orbiting its much brighter star.
Posted inGeoFIZZ

Oddballs of the Exoplanet Realm

by Damond Benningfield 26 July 202125 October 2021

The list of planets in other star systems includes zombies, hot giants, puffballs, and even a few Tatooines. Zowie!

An artist’s rendering shows the seven small rocky worlds of the TRAPPIST-1 system in orbit around an M dwarf star.
Posted inAGU News

Unveiling the Next Exoplanet Act

by Heather Goss 26 July 202114 April 2022

In August, Eos looks at what the first round of observations with the James Webb Space Telescope might reveal about faraway worlds.

Illustration of a small, mottled, cold exoplanet, with its host star in the background.
Posted inFeatures

Exoplanets in the Shadows

by Damond Benningfield 26 July 202125 October 2021

The bright clutter of individual discoveries can overshadow some fascinating research, from necroplanetology to rogue planets to the intimacy of alphanumeric nomenclature.

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