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stars

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.

Earth with stars in the background.
Posted inNews

Thousands of Stars View Earth as a Transiting Exoplanet

by Katherine Kornei 22 July 202114 April 2022

Researchers have identified more than 2,000 stars whose past, present, or future vantage points afford a view of Earth passing directly in front of the Sun, a geometry useful for pinpointing planets.

The supergiant Betelgeuse glows red and orange against a dark, starry background. The star’s surface is mottled and emits a faint reddish glow representing its stellar wind. A dark cloud of dust partially obscures the star’s lower left region.
Posted inNews

When Betelgeuse Won’t Explode, You Need a Big Telescope to Prove It

by Kimberly M. S. Cartier 30 June 202126 January 2022

Thanks to last-minute telescope time, researchers pieced together the sequence of events that caused Betelgeuse’s Great Dimming last year.

An enormous stellar flare erupts from Proxima Centauri in this artist’s representation.
Posted inNews

Record-Setting Flare Spotted on the Nearest Star to the Sun

by Katherine Kornei 24 May 202128 April 2022

Proxima Centauri recently let loose a blast of radiation, and ground- and space-based telescopes detected the record-setting event at wavelengths ranging from radio to the ultraviolet.

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.

An artist's impression of a gas giant orbiting a white dwarf star
Posted inNews

Hot White Dwarfs May Reveal Cold Gas Giants

by Nola Taylor Tillman 2 March 202014 January 2022

The gaseous atmospheres of giant planets may evaporate and accrete onto the dense surfaces of white dwarfs, providing astronomers a new way to detect hidden exoplanets.

a black meteorite sitting on a white table
Posted inNews

Dust Older Than the Sun Sheds Light on Galactic History

by Kimberly M. S. Cartier 23 January 20202 February 2022

A small pile of dust grains older than the Sun brings new evidence about the rate at which stars are born in the Milky Way.

Illustration of the interstellar object ‘Oumuamua shedding dust while hurtling toward the distant Sun
Posted inNews

Interstellar Visitors Could Export Terrestrial Life to Other Stars

by Nola Taylor Tillman 22 January 202029 September 2021

A handful of interstellar objects and long-period comets could have scooped up microorganisms from Earth and carried them to worlds around other stars.

Exoplanet near a star
Posted inNews

Chemical Patterns May Predict Stars That Host Giant Planets

by Kimberly M. S. Cartier 25 June 20197 March 2022

Stars with giant planets tend to have a few key elements in abundance. A new algorithm used these patterns to predict hundreds of stars that will likely have exoplanets if we go looking for them.

The solar system’s new habitable zone after our Sun becomes a red giant.
Posted inNews

Aging Stars Make New Habitable Zones

by JoAnna Wendel 16 May 201629 September 2021

Scientists searching for life in the universe now have a new target: the once-icy worlds orbiting red giants.

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