Space News & Blog Articles

How a determined amateur astronomer may have hit on the identity of a Cepheid variable double star described by a beloved author.

A "little red dot" galaxy from when the universe was roughly half a billion years old shows signs of the most distant black hole known.

Scouring old data from NASA’s Cassini mission revealed puzzling atmospheric stripes that could help probe Saturn’s icy moon.

New James Webb Space Telescope observations of the third world in the seven-planet TRAPPIST-1 system rule out a variety of atmospheres.

Saturn glows through the evening near the Andromegasus Dipper. Venus and Jupiter, drawing apart, still light the dawn dramatically. The Moon joins them.

Astronomers at the South African MeerKAT observatory have discovered the most distant flash of radio waves to date, most likely stemming from activity around a magnetar.

Chaotic turbulence in primordial clouds of gas may have prevented the formation of extremely massive stars, according to new simulations by Taiwanese astronomers. The early universe consisted primarily of hydrogen […]

Set an alarm and take a peek east in early dawn to follow Venus and Jupiter through their spectacular conjunction this week.

Direct images from the James Webb Space Telescope show what could be a Saturn-mass planet around Alpha Centauri.

Sure, the Moon will be a problem. But clouds are worse. Don't miss one of the best meteor showers of the year.

Even today, the names of women in astronomy are not as well known as they should be.

Sky & Telescope Associate Editor Sean Walker and Contributing Editor Stephen James O’Meara accompanied nine adventurers on a stargazing safari for an immersive experience in the African bush in Botswana.

The waxing gibbous Moon of August haunts the low south. Venus and Jupiter draw toward a spectacular conjunction in early dawn.

Find out “what’s up” in the August sky. We’ll track down four planets before dawn; have some fun with New Moons; peek at some Perseids; and gaze at the center of our galaxy. So load up on the bug juice, and come along on this month’s Sky Tour.

The International Astronomical Union has recommended brightness limits for satellites, but companies aren't abiding by them.

Observations have revealed the comet’s fuzzy coma, hinted at a weird tail, and suggested an ancient history. Plus, some missions might keep observing the interstellar comet when it ducks behind the Sun.

The House and Senate bill drafts keep NASA near current funding levels, but the Trump administration is prematurely readying the agency for heavy cuts

A new image from the Gemini Observatory might show a stellar companion to Betelgeuse, but the discovery is tentative.

The newly waxing Moon passes Mars low in the west, then Spica and Antares while growing more robust. At dawn, Jupiter heads toward Venus.

NASA’s TRACERS spacecraft will look at the snap of magnetic field lines at the boundary between the solar wind and Earth's magnetic field.

Astronomers have found a baby system that’s just beginning to build planets — and it can tell us about how and where planet formation starts.