Space News & Blog Articles

Astronomers have spotted the X-ray flash that precedes a nova. The brief flare is the first sign of a white dwarf erupting into a nuclear-fusion fireball.

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

Two Sky & Telescope authors have won prestigious awards recognizing excellence in science journalism.

North American skywatchers can see the Moon turn a reddish hue as it flirts with Earth’s shadow on the night of May 15–16.

The full Flower Moon ducks inside Earth's shadow in a total lunar eclipse this month. We help you prepare for all the highlights of the special event.

The Moon aligns with Pollux and Castor – but how precisely for you? Three zero-magnitude stars form a far-flung spring triad. And with Libra and Bootes up, the two oldest things you will ever see await your binoculars or scope.

What’s the mechanism behind millisecond-duration bursts of radio energy coming from outer space? A team searched for visible-light counterparts to constrain the origin of fast radio bursts — and found one.

Many an amateur astronomer has desired a bigger telescope, but sometimes it's worth taking a moment to appreciate what we have.

Plakha Alexander — amateur astronomer, owner of Astro-Gadget.net, and Ukrainian — shares his experiences since Russia's invasion began.

Why doesn't Earth have Trojan asteroids of its own? Large impacts in the early years of the solar system may be to blame.

Download this month's Sky Tour podcast to find which planets are visible in the morning and evening skies, along expert tips for how to view the total lunar eclipse on May 15–16.

An independent team has found additional black hole mergers in LIGO data.

Mercury passes the Pleiades at dusk. Jupiter passes Venus in the dawn as Mars and Saturn watch. And can you name the three brightest stars of these spring nights? Hint: They're all magnitude zero.

A new analysis method has revealed DNA building blocks in meteorites, suggesting that these prebiotic molecules might have formed during the solar system's earliest years.

As Solar Cycle 25 ticks up, naked-eye sunspots are becoming more frequent. They're not only fun to observe, but with this simple method you can determine just how big they are. We also have news on a bright supernova!

Once the primary mission of NASA's OSIRIS-REx is complete, the spacecraft will head toward a new destination: near-Earth asteroid Apophis.

A recently discovered type of stellar explosion might fit right in among the spectrum from regular supernovae to massive gamma-ray bursts.

The Hubble Space Telescope turns 32 on April 24th, and the team behind the telescope is marking the occasion with the release of a galactic family picture.

Are you interested in combating light pollution? International Dark Sky Week, which starts today, offers events in which you can learn how.

Arcturus, Spica, and Corvus put on their spring show. The Pointers point straight down at nightfall, which means Leo walks the high south and the Arch of Spring spans the west.

A distant object in a deep Hubble Space Telescope field could be in transition from ordinary galaxy to brilliant beacon of light.