1–20 of 337 results
a blue arc on top looms over an active, lumpy-looking star

Exoplanets

Hubble Reveals Possible Water-Vapor World

New Hubble Space Telescope observations reveal the warm sub-Neptune GJ 9827d might have a steamy atmosphere.

Exoplanets

Did Webb Detect an Atmosphere on Hot Super-Earth 55 Cancri e?

New Webb data suggests that the hot super-Earth 55 Cancri e has a thick atmosphere, perhaps maintained by the planet's magma ocean.

a blue orb with a red ring at its top on a black background

Exoplanets

Unexplained Auroras Found on a Lonely Brown Dwarf

James Webb Space Telescope observations of a faint, giant world have revealed the signature of aurorae — even though the world has no star.

Illustration of Kepler-1625b and moon transiting star

Exoplanets

Doubt Cast on Exomoon Candidates

Exomoon candidates are tantalizing but, according to new research, perhaps unfounded.

An artist's representation of the six-planet system on black with multi-color geometrical pattern in the background

Exoplanets

Six Sub-Neptunes Discovered 100 Light-Years Away

Astronomers have uncovered six sub-Neptune exoplanets dancing in lock-step around the same distant star, shedding light on their formation.

artist's impression of weird inflated planet

Exoplanets

Webb Telescope Peers into Puffy Planet with Clouds of Sand

A mere 200 light-years away, there's a planet with the density of styrofoam and clouds of sand. How did it get so weird?

Planet-forming disks

Exoplanets

Webb Shows Planets Really Do Start with Pebbles

New observations have turned up evidence that icy pebbles deliver the water to inner regions of planet-forming disks.

Terrestrial Synestia (art)

Exoplanets

Two Worlds Have Ended in a Planetary Collision — and a New One Has Begun

A star's sudden brightening and, two years later, its sudden dimming point to a cataclysmic collision between two large worlds.

Artist's concept shows blue-streaked surface of a massive solid planet

Exoplanets

How Did Two Hot and Super-dense Neptunes Form?

Astronomers have discovered two Neptune-size planets that are denser than rock and in searingly close orbits to their star. How did these odd worlds form?

Illustration of an exoplanet planet and its red cool dwarf star on a black background that is speckled with some small stars. The planet is large, in the foreground on the right and the star is smaller, in the background at the lower left. The planet is various shades of blue, with wisps of white scattered throughout. The left edge of the planet (the side facing the star) is lit, while the rest is in shadow. The star has a bright red glow

Exoplanets

Hubble, Webb Data Hint at Ocean Worlds

Data coming from the Webb and Hubble space telescopes suggests two exoplanets might be water worlds. But the evidence isn’t yet definitive.

Near-infrared image shows the Ring Nebula in yellow (central area) and purple (outer ring)

Stellar Science

Webb Views the Ring Nebula and Earendel in a New Light

This week, James Webb Space Telescope reveals new details in the Ring Nebula and shows that the most distant known star isn't alone. Meanwhile, patient astronomers have collected 17 years' worth of images of the super-Jupiter Beta Pictoris b.

Explosive forming stars

Exoplanets

Astronomy in Pictures: The Birth of Stars and Planets

Images capture the birth of stars and planets in multiple results from space- and ground-based telescopes.

Image of PDS 70b and a possible Trojan body(ies)

Exoplanets

This Planet Might Have a Sibling Sharing Its Orbit

Astronomers have spotted the first solid evidence for a planetary Trojan body forming in another system outside our own.

Artist's illo of airless TRAPPIST-1c and red dwarf star host in background

Exoplanets

Exoplanet News: No Air on Venus Twin, Young Jupiter Discovery

Astronomers have discovered Jupiter's younger sibling in a system 88 light-years away. Meanwhile, only 40 light-years away, a Venus-size world turns out to be airless (or nearly so).

Exoplanets

Mini-Neptune Reveals (Some of) Its Secrets

James Webb Space Telescope observations offer a new window inside the atmosphere of the secretive sub-Neptune GJ 1214b.

An orange oval extends from the 1 o’clock to 7 o’clock positions. It features a prominent outer ring, a darker gap, an intermediate ring, a narrower dark gap, and a bright inner disc. At the centre is a ragged black spot indicating a lack of data

Exoplanets

The James Webb Space Telescope Reveals Fomalhaut's Disk In Unprecedented Detail

Continuing its run of ground-breaking discoveries, the James Webb Space Telescope has snapped the clearest images yet of the dusty disk around the young star Fomalhaut.

hot and swollen star eating a planet much smaller than it

Exoplanets

Star Caught Swallowing a Planet

For the first time, astronomers have witnessed a star eat an exoplanet.

Habitable-zone planet that looks much like Earth (art)

Astrobiology

Where to Look for Life: Homing in on the Habitable Zone

Scientists are refining the definition of the habitable zone in an effort to aid future efforts at finding life.

Giant planets around a small, red-colored star

Exoplanets

Giant Planets Around Small Stars

Leading theories say giant planets shouldn’t be able to form around very low-mass stars. But a new study finds that, nevertheless, they do.

Visualization of airless TRAPPIST-1b and its red dwarf star host

Exoplanets

Exoplanet TRAPPIST-1b Has No Atmosphere

The TRAPPIST exoplanets offer the James Webb Space Telescope some of the best opportunities to observe rocky worlds. But Webb images show the innermost planet b has no atmosphere.

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