Stars and Galaxies

The future of satellite constellations and the fight to save the night sky are reaching a crucial tipping point.

Astronomers have combined observation from the James Webb and Hubble space telescopes to get a better grasp of how interstellar dust obscures the view of distant galaxies.

Four of the first science-quality images from NASA's James Webb Space Telescope have received a boost from X-ray vision.

Buying Guide Looking for the best telescopes available in 2022? We've listed them here in one handy guide for you.

An astrophotographer takes an epic composite image of Jupiter, NASA slams a spacecraft into an asteroid, and Hurricane Ian is monitored from space. These are some of this week's top stories.

An odd shield of supercharged gas protects dwarf galaxies from being ripped apart by the gravitational pull of the Milky Way, 30 years' worth of observations by the Hubble Space Telescope reveal.

A machine-learning algorithm has helped astronomers discover thousands of gravitational lenses predicted by Einstein.

Stars differ in size, luminosity and distance from us. We discuss how astronomers measure these three values to understand the three-dimensional sky.

The first deep-field image revealed from the James Webb Space Telescope hid a wealth of treasure including a sparkling galaxy that could host the universe's first stars.

New research suggests that a strange 'ripple' is causing the Milky Way's stars to vibrate out of step, and an ancient collision with Sagittarius may be to blame.

Astronomers have discovered the chemical traces of the universe's earliest stars that died in super-supernova explosions.

Since 2014, SOFIA has been cruising through the night skies around the world, looking at the cosmos, but that mission ends this week.

The repeating blasts of a fast radio burst from a galaxy like our own is challenging a proposed explanation for these fleeting but energetic bursts of radio waves.

There is some debate as to the nature of the star cluster NGC1746.

Rapidly spinning dead stars in the dwarf galaxy Sagittarius are the source of gamma-ray emissions within the massive bubbles that blow out from our galaxy.

On Wednesday morning, the moon will pass the Beehive cluster in the night sky, giving sky watchers an easy reference point to spot it.

The moon will pass by the brightest stars of the Gemini constellation  —  Pollux and Castor  —  and will be closest to the former early Tuesday morning.