Cosmic Gateway

A daily gateway from astronomy discoveries to genuine understanding.

Read about the latest discoveries in astronomy, see the evidence, and follow the concepts that make the headline make sense.

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Peer reviewedJames Webb Space Telescope

Early Galaxies Challenge Simple Growth Models

Webb's infrared view finds unexpectedly developed structure soon after the Big Bang.

Quick 1 · Learn 4 · Deep 6 min

Webb's first deep field: thousands of galaxies in the cluster SMACS 0723, including distant early-universe systems — NASA, ESA, CSA, STScIWebb's First Deep Field (SMACS 0723). Infrared light reveals distant galaxies whose ultraviolet glow has been stretched by cosmic expansion.Rights / source

Official releaseCosmology

Euclid's View of the Perseus Cluster of Galaxies

A wide, sharp look at a massive cluster where dark matter shapes the cosmic web.

Quick 1 · Learn 4 · Deep 6 min

ESA Euclid image of the Perseus cluster of galaxies showing thousands of galaxies — ESA / Euclid / Euclid ConsortiumEuclid's view of the Perseus cluster: a dense concentration of galaxies used to probe cosmic structure.Rights / source

Peer reviewedStars and stellar evolution

Clearest Image Yet of Betelgeuse's Elusive Companion

VLT/SPHERE captures strong visual evidence that the red supergiant is not alone.

Quick 1 · Learn 4 · Deep 6 min

VLT/SPHERE image showing the candidate companion of Betelgeuse with Betelgeuse's glare removed — ESO/M. Montargès et al.Clearest image yet of the candidate companion Betelgeuse B, obtained with ESO's VLT/SPHERE.Rights / source

Official releaseSolar system

Webb Tracks Water Ice Plumes from Enceladus

Infrared observations follow the ocean moon's geyser-fed spray into space.

Quick 1 · Learn 3 · Deep 6 min

James Webb Space Telescope view related to Enceladus and its water-ice plume — NASA, ESA, CSA, STScIWebb observations of Enceladus highlight water-ice plume activity from this ocean world.Rights / source

Official releaseSolar system

Webb's Close-Up of Neptune and Its Rings

Infrared imaging sharpens Neptune's rings, moons, and storm-world atmosphere.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope wide-field near-infrared image of Neptune, its rings, and nearby moons including bright Triton — NASA, ESA, CSA, STScIWide-field NIRCam view of Neptune and its rings; Triton appears as the bright spiked point of light.Rights / source

Official releaseBlack holes and extreme gravity

GW170817: A Neutron Star Merger Seen in Waves and Light

Gravitational waves and a kilonova confirmed how heavy elements can form.

Quick 1 · Learn 3 · Deep 6 min

ESO image related to the optical counterpart of neutron star merger GW170817 in galaxy NGC 4993 — ESOFollow-up imaging connected to GW170817: the kilonova in NGC 4993 observed with ESO facilities.Rights / source

Official releaseBlack holes and extreme gravity

First Image of a Black Hole: M87*

The Event Horizon Telescope resolves the shadow of a galaxy's central giant.

Quick 1 · Learn 4 · Deep 6 min

Event Horizon Telescope image of the black hole shadow in galaxy M87 — EHT CollaborationThe first image of a black hole: M87* as observed by the Event Horizon Telescope collaboration.Rights / source

Official releaseBlack holes and extreme gravity

First Image of Sagittarius A*, the Milky Way's Black Hole

The Event Horizon Telescope resolves the shadow of our Galaxy's central black hole.

Quick 1 · Learn 4 · Deep 6 min

Event Horizon Telescope image of Sagittarius A*, the black hole at the center of the Milky Way — EHT CollaborationThe Event Horizon Telescope's image of Sagittarius A*: a bright ring surrounding the black hole's shadow.Rights / source

PreliminaryExoplanets

K2-18b: Intriguing Atmospheric Signals, Unsettled Claims

Webb spectra of a sub-Neptune spark debate — especially around possible biosignature interpretations.

Quick 1 · Learn 4 · Deep 6 min

Illustrative Webb imagery related to exoplanet K2-18b atmospheric observations — NASA, ESA, CSA, STScIK2-18b observations with Webb: atmospheric signals that remain under active scientific debate.Rights / source

Official releaseJames Webb Space Telescope

Webb's Infrared View of Sagittarius C

A star-forming complex near the Milky Way's center, revealed through dust.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope infrared image of the Sagittarius C star-forming region near the Galactic Center — NASA, ESA, CSA, STScIWebb infrared portrait of Sagittarius C, a star-forming region in the Milky Way's central molecular zone.Rights / source

Peer reviewedExoplanets

Webb Reveals WASP-39b's Atmosphere in Unprecedented Detail

Transit spectroscopy detects carbon dioxide and a rich inventory of gases in a hot exoplanet.

Quick 1 · Learn 3 · Deep 6 min

Webb release imagery for hot exoplanet WASP-39b, used to illustrate atmospheric spectroscopy results — NASA, ESA, CSA, STScIWebb's early transit-spectroscopy milestone: detailed atmospheric features in the hot exoplanet WASP-39b.Rights / source

ConfirmedSolar system

Webb and Hubble Capture the DART Asteroid Impact

Infrared and optical views of humanity's first kinetic asteroid deflection test.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope infrared image of the DART impact ejecta around asteroid Dimorphos — NASA, ESA, CSA, STScIWebb infrared observations of the Didymos–Dimorphos system after NASA's DART kinetic impact.Rights / source

Official releaseStars and stellar evolution

Webb's Infrared View of the Crab Nebula

Dust, filaments, and the pulsar-powered remnant of a historic supernova.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope infrared image of the Crab Nebula — NASA, ESA, CSA, STScIThe Crab Nebula in infrared light from Webb, showing filamentary ejecta and dust in the pulsar wind nebula.Rights / source

Official releaseStars and stellar evolution

Webb's Detailed Beauty of the Ring Nebula

A nearby planetary nebula resolved into shells, filaments, and molecular structure.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope infrared image of the Ring Nebula showing detailed shells and filaments — NASA, ESA, CSA, STScIWebb infrared portrait of the Ring Nebula (M57), an archetypal planetary nebula about 2,500 light-years away.Rights / source

Official releaseStars and stellar evolution

Webb Maps Cassiopeia A in Infrared Detail

A nearby supernova remnant shows clumpy debris and a cooling neutron-star heart.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope infrared image of the Cassiopeia A supernova remnant — NASA, ESA, CSA, STScICassiopeia A as seen by Webb: clumpy supernova ejecta and dust in a young remnant.Rights / source

Official releaseCosmology

Webb Peers Through Pandora's Cluster

Gravitational lensing turns a massive cluster into a natural telescope for distant galaxies.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope infrared image of Pandora's Cluster showing lensed background galaxies — NASA, ESA, CSA, STScIWebb infrared view of Pandora's Cluster (Abell 2744), where gravitational lensing magnifies distant background galaxies.Rights / source

Official releaseJames Webb Space Telescope

Webb's Cosmic Cliffs in the Carina Nebula

A glittering edge of star birth sculpted by radiation from massive stars.

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James Webb Space Telescope NIRCam image of the Cosmic Cliffs in the Carina Nebula — NASA, ESA, CSA, STScIThe Cosmic Cliffs in NGC 3324: a radiation-carved edge of a star-forming cavity in the Carina Nebula.Rights / source

Official releaseJames Webb Space Telescope

Webb's New Look at the Cartwheel Galaxy

A ring galaxy forged by a head-on collision, seen in infrared dust and star formation.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope infrared image of the Cartwheel galaxy showing rings and spokes — NASA, ESA, CSA, STScIWebb infrared view of the Cartwheel galaxy, a collisional ring system with dusty spokes and star-forming rings.Rights / source

Official releaseJames Webb Space Telescope

Webb's Star-Filled Portrait of the Pillars of Creation

Infrared light turns Hubble's iconic towers into a nursery of forming stars.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope near-infrared image of the Pillars of Creation in the Eagle Nebula — NASA, ESA, CSA, STScIThe Pillars of Creation in near-infrared light from Webb's NIRCam, revealing young stars inside the dusty towers.Rights / source

Official releaseBlack holes and extreme gravity

Webb Finds a Dense Cosmic Knot Around an Extremely Red Quasar

Spectroscopy reveals a forming galaxy cluster core in the early Universe.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope infrared view related to an extremely red quasar and surrounding early-Universe galaxies — NASA, ESA, CSA, STScIWebb infrared observations of a dense knot of galaxies assembling around an extremely red quasar in the early Universe.Rights / source

Official releaseJames Webb Space Telescope

Webb's Infrared View of Starburst Galaxy M82

A nearby galactic wind laboratory lit by intense star formation.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope infrared image of the starburst galaxy Messier 82 — NASA, ESA, CSA, STScIWebb infrared portrait of M82, highlighting dust, star clusters, and structures tied to its starburst-driven wind.Rights / source

Official releaseStars and stellar evolution

Webb Captures Wolf-Rayet 124's Winds and Dust

A rare massive star sheds shells of gas and dust on the road toward a supernova.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope infrared image of Wolf-Rayet star WR 124 and its surrounding nebula of gas and dust — NASA, ESA, CSA, STScIWebb image of WR 124 showing a halo of gas and dust from episodic massive-star winds.Rights / source

Official releaseJames Webb Space Telescope

Webb's Portrait of Stephan's Quintet

A compact galaxy group becomes a laboratory for mergers, shocks, and black-hole feedback.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope infrared mosaic of Stephan's Quintet interacting galaxies — NASA, ESA, CSA, STScIWebb's infrared view of Stephan's Quintet, showing interacting galaxies, shocked gas, and dusty star-forming regions.Rights / source

Official releaseStars and stellar evolution

Webb's Detailed Portrait of Herbig-Haro 46/47

Near-infrared imaging resolves twin jets from a pair of forming stars in Vela.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope near-infrared image of Herbig-Haro 46/47 protostellar jets — NASA, ESA, CSA, STScIWebb NIRCam portrait of HH 46/47: bipolar jets from a young stellar pair pierce their dusty birth cloud.Rights / source

Official releaseExoplanets

Webb Finds a Dusty Cat's Tail in Beta Pictoris

Mid-infrared imaging reveals a new debris structure in a nearby planet-forming system.

Quick 1 · Learn 4 · Deep 6 min

James Webb Space Telescope mid-infrared image of the Beta Pictoris debris disk system showing an inclined dusty feature — NASA, ESA, CSA, STScIWebb MIRI view of Beta Pictoris debris disks, including a sharply inclined dusty branch nicknamed the cat's tail.Rights / source