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exoplanets

Cutaway view of a rocky planet’s layered interior structure with a nebula in the background
Posted inNews

Superlasers Shed Light on Super-Earth Mantles

by Kimberly M. S. Cartier 10 March 202130 September 2021

By compressing iron oxide to pressures expected inside a large and rocky exoplanet, scientists discovered that such mantles could layer, mix, and flow in ways very different from those inside our planet.

Image showing the cloud bands on Luhman 16 B
Posted inNews

Seeing Stripes in the Atmosphere of a Brown Dwarf

by Damond Benningfield 15 February 202128 January 2022

A planet-hunting satellite’s observations of the nearby system Luhman 16 AB reveal bands of clouds, high-speed jets, and polar vortices.

The Robert C. Byrd Green Bank Telescope at the Green Bank Observatory in West Virginia
Posted inNews

Podcast: A Modern Way to Look for Aliens

by Kimberly M. S. Cartier 12 February 202130 September 2021

The search for extraterrestrial intelligence is undergoing a 21st century transformation. The field is poised to lead the way as an example of interdisciplinary research and inclusive science.

A dark, rocky exoplanet in front of a starry background
Posted inNews

Airless Exoplanet’s Mantle Could Flow in Halves

by Kimberly M. S. Cartier 7 December 202028 October 2021

With no atmosphere in the way, measurements of the planet’s surface temperature are the first observational constraints on mantle convection models for an exoplanet.

Satellite image of Earth, as filmed by Apollo 8 astronauts from the surface of the Moon
Posted inNews

Exoplanet Earth: An Ultimate Selfie to Find Habitable Worlds

by J. Romero 30 November 202016 June 2022

Aliens spying on us from afar is a common science fiction trope. Soon we might know what E.T. would see through a telescope. And that information could help identify other Earth-like planets.

Preliminary concept for the Interstellar Probe spacecraft
Posted inFeatures

Preparing for a Handoff

by Damond Benningfield 9 July 20205 October 2021

Scientists with Interstellar Probe, a proposed 50-year flight to interstellar space, are pondering how to plan and carry out a multigenerational mission.

Illustration of a blue planet with a network of data connections and computer code in its atmosphere
Posted inNews

Machine Learning Can Help Decode Alien Skies—Up to a Point

by Kimberly M. S. Cartier 25 June 202016 June 2022

Astronomers are testing the tools that might help them keep up with the upcoming storm of exoplanet atmosphere data.

Illustration of the geological evolution of Earth
Posted inNews

Looking Back at Our Pale Blue Dot

by C. Fogerty 23 April 20208 April 2022

Astronomers model changes in Earth’s chemical signature over the past 4 billion years to improve the search for Earth-like exoplanets.

Asteroids smashing into one another
Posted inNews

Dust from Colliding Asteroids Masqueraded as a Planet

by Katherine Kornei 20 April 20202 February 2022

New analysis of Hubble Space Telescope images suggests that Fomalhaut b, once believed to be an extrasolar planet, is, in fact, a cloud of dust that likely formed from the collision of enormous asteroids.

Orange and brown planet-looking object
Posted inNews

Record-Setting Winds on a Nearby Brown Dwarf

by Katherine Kornei 16 April 2020

Infrared and radio observations reveal zonal winds moving faster than 2,000 kilometers per hour on a “failed star” in our celestial neighborhood.

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