21–40 of 337 results
Cutaway diagram of protoplanetary disk, which flares out away from star

Solar System

Water on Earth Might Predate the Solar System

Astronomers studying the water vapor around a newborn star find that it’s chemically similar to ice in solar system comets, a possible source of Earth’s oceans.

Exoplanets

New Planets in the Neighborhood

A planet-hunting consortium is marking five successful years by releasing data on more than 50 worlds.

image of the three stars in the Kepler-444 system

Exoplanets

A Fresh Look at Kepler-444’s Ancient Planetary System

Astronomers have taken a closer look at a system containing three stars and five planets and may have solved a mystery around its formation.

Dark planet with translucent atmosphere in front of bright star

Exoplanets

JWST Investigates an Exoplanet "Corgi"

The James Webb Space Telescope has found the tiny tail of a close-in exoplanet that's losing its atmosphere.

Illustration of a planet and its star on a black background. The planet is large, in the foreground at the centre, and the star is smaller, in the background and also at the centre. The planet is rocky. The top quarter of the planet (the side facing the star) is lit, while the rest is in shadow. The star is bright yellowish-white, with no clear features.

Exoplanets

Webb Telescope Confirms Earth-size Exoplanet, Tries to Sniff Its Air

The James Webb Space Telescope has confirmed its first exoplanet, a rocky Earth-size planet, and attempted to take the measure of its atmosphere.

WASP-39b artist's illustration

Exoplanets

Webb Telescope Surveys a Hot Saturn

A collection of five research studies delve into the atmosphere of exoplanet WASP-39b as astronomers seek to better understand the chemistry of a world beyond the solar system.

Oumuamua painting by Hartmann

Exoplanets

Was Interstellar Object `Oumuamua a Chunk of Exo-Pluto?

The interstellar pancake named 'Oumuamua might have been a chip off a Pluto-like object in another star system.

White dwarf surrounded by debris disk (art)

Stellar Science

Ancient White Dwarf Hosts Planetary Graveyard

Scientists have discovered one of the oldest planetary graveyards in the Milky Way: a cool white dwarf "polluted" with rocky debris.

an illustration of a flaring red dwarf, with a disk of gas and dust containing an earth-like exoplanet.

Exoplanets

Shields Up: Red Dwarf Worlds Might Adapt to Hostile Systems

Worlds around red dwarf stars might build an ozone "shield" in response to stellar flares.

Artist's illustration of a baby planet

Exoplanets

Breadcrumbs Lead to Baby Planet

New radio images reveal evidence for a planet forming around the Sun-like star LkCa 15.

Exoplanets

Webb's Exoplanet Data Are Almost Too Good

A new study urges caution in interpreting the chemical fingerprints that Webb is collecting of alien worlds.

Tarantula Nebula in infrared looks more like a cavity surrounded by spider silk

Exoplanets

Webb Captures an Exoplanet, a Brown Dwarf — and a Giant Tarantula

New Webb images reveal the space telescope's first exoplanet, first brown dwarf, and a stellar nursery teeming with activity.

NGC 628 looks like a giant blue-gold maelstrom with a blue middle

Galaxies

Webb Reveals Jupiter, Puffy Planet, and Galactic Maelstroms in a New Light

Round out your week with these stunning views of the universe from the James Webb Space telescope.

four overlapping jupiters showing dark orange marks on the bottom

Exoplanets

When Planets Collect Comets

What kind of planets are likely to ensnare comets coming in from the icy outer reaches of a planetary system?

Carina Nebula

Astronomy in Space with David Dickinson

What We See in the First Science Images from the James Webb Space Telescope

The James Webb Space Telescope released its first science images today. Here's what these images show us.

Webb's first deep field

Galaxies

What the James Webb Space Telescope's First Year Will Reveal

The James Webb Space Telescope's first year of observations promises to reveal exoplanet atmospheres and surfaces, infant galaxies, and maybe even the first black holes.

HL Tau by ALMA

Citizen Science: Projects & Collaboration

Citizen Scientists Detect Dusty Disks

Disk Detective, a citizen science project dedicated identifying planet-forming disks around young stars, reports their latest results.

White dwarf surrounded by debris disk (art)

Stellar Science

A Strange White Dwarf with a Chaotic Past

New observations show that both rocky and icy worlds fell onto a white dwarf, indicating past orbital chaos in the system.

Earth, reDSCOVRed

Exoplanets

How to Image an Exoplanet with Just a Few Pixels

Using Earth as an example, astronomers are testing a new technique that could image rocky exoplanets without resolving them.

a large orange org against a brown background with clouds and a distant light

Exoplanets

Hot and Cold: Jupiters Reveal Formation and Chemistry of Exotic Worlds

At the extremes: A hot Jupiter reveals extreme chemistry on a sizzling world, and a cold Jupiter sheds light on giant planet formation.