Astronomy

Latest about Astronomy

In this long exposure image, a series of rings and streaks in concentric circles fill the colorful blue, orange, and green night sky with a domed roof of an observatory below.

Stars and satellites streak over Gemini North telescope | Space photo of the day for Oct. 17, 2025

By Kenna Hughes-Castleberry published

A striking new image from the Gemini North telescope captures the changing face of the night sky, where stars mingle ever more frequently with satellite trails.

Astronomy

What is the moon phase today? Lunar phases 2025

By Tariq Malik, Daisy Dobrijevic last updated

Reference See what moon phase it is tonight and find out when you can see the rest of the moon phases for 2025.

Reference
A gray scale image showing a labeled "dune crest" at the edge of a Martian gulley with wind patterns showing the geology of the formation.

Dry ice may burrow through Mars like sandworms in 'Dune'

By Samantha Mathewson published

Blocks of carbon dioxide ice appear to carve mysterious gullies on Mars as they melt down dune slopes and blast away sand.

Mars
An artist’s impression of a tidal disruption event, where a star gets too close to a black hole and is torn apart, its debris forming an accreting disk of material around the black hole.

Rule-breaking black hole destroys star in puzzling way: 'This is truly extraordinary'

By Keith Cooper published

The so-called tidal disruption event also produced two puzzling delayed outbursts.

Black Holes
An image of Earth from space, with bright brown land streaked with a dark green river on the right side of the image with a curved ridge from left to right meeting the river toward the bottom of the image

Where the ridge meets the river | Space photo of the day for Oct. 16, 2025

By Kenna Hughes-Castleberry published

From above Earth, LandSat 9's keen eye captures a stunning Y-shaped meeting of ridge and river in China's Tarim Basin.

Earth
A series of blue and red blurs of light swirl around stars in a deep space image

Not-so-dark matter? Mysterious substance might leave red and blue 'fingerprints' on light

By Sharmila Kuthunur published

A new study suggests dark matter could subtly tint or polarize light, leaving faint color clues that next-generation telescopes might detect.

Dark Universe
Glowing swirls of white symbolize a pulsar at the heart of clouds of blue and purple gas that show the Crab Nebula.

How scientists are using spinning dead stars to find ripples in the fabric of spacetime

By Keith Cooper published

Identifying the gravitational waves from black holes binaries could also make it clearer to detect primordial gravitational waves that date back to inflation at the moment of the Big Bang.

Black Holes
An illustration showing the path of near-Earth asteroid 2025 TP5 as it passes by Earth

Asteroid discovered only 2 days ago just flew by Earth closer than the moon

By Elizabeth Howell published

A small asteroid, called 2025 TP5, safely flew by our planet on Oct. 15 at about a quarter of the distance to the moon.

Asteroids
Artist's illustration of Impulse Space's planned lunar lander circling the moon.

A new private moon lander rises: Impulse Space throws its hat into the lunar ring

By Mike Wall published

Impulse Space — which was founded by Tom Mueller, SpaceX's second-ever employee — just announced that it plans to build a robotic moon lander to help open the lunar frontier.

The moon
a map of earth overlaid in splotches of orange and purple

A giant weak spot in Earth's magnetic field is getting bigger — and it could be bad news for satellites

By Brett Tingley published

Satellite data reveal that a weak region in Earth's magnetic field has grown by an area roughly half the size of continental Europe in the last 10 years.

Earth
1 2 3 4 5 6 7 8 9 Archives