Astronomy

A Dark Sky Sanctuary must have exceptionally starry nights.

This Tiny Welsh Island Is Europe's First Dark Sky Sanctuary

Ynys Enlli joins just 16 other sites of its kind across the world

Images of the six objects thought to be massive galaxies from the early universe

Webb Telescope Finds Evidence of Massive Galaxies That Defy Theories of the Early Universe

The six “universe breakers” appear much larger than what scientists thought was possible at that time

How much advance warning would we have if a large comet were headed on a collision course with Earth?

How Much Warning Would We Have of an Earth-Shattering Comet? And More Questions From Our Readers

You’ve got questions. We’ve got experts

An enhanced-contrast image of Jupiter and its moon Ganymede taken by NASA's Cassini spacecraft in 2000.

Jupiter Reclaims Title of Planet With the Most Moons

After the discovery of 12 new moons, the gas giant now has 92 known natural satellites—and scientists expect to find more

A meteor streaks across the sky near Lone Pine, California, during the annual Perseid meteor shower in 2022.

Ten Dazzling Celestial Events to See in 2023

Stargazers can look forward to watching a rare comet, a super blue moon and several spectacular meteor showers

Miriam Wosk's illustration of a blue-skinned, eight-armed multitasking woman adorned the first cover of Ms. magazine. "Making her blue was a way of making her universal," says Gloria Steinem in this month's "Portraits" podcast.

Explore the Founding of 'Ms.' Magazine and the Making of a Space Telescope Photograph in This Month’s Featured Podcasts

“AirSpace” speaks to astronomer Shauna Edson and “Portraits” drops in on activist and author Gloria Steinhem

An orbital diagram shows that 2023 BU's trajectory (in red) passed closer to Earth on January 26, 2023 than the orbits of geosynchronous satellites (in green). 

An Asteroid Just Passed Very Close to Earth

The truck-sized space rock came within 2,200 miles of our planet, closer than some satellites

The twilight sky as seen in Coonabarabran, Australia

Light Pollution Is Outshining Stars Faster Than Thought

The artificial glow threatens astronomy, migrating birds and human health

Comet C/2022 E3 (ZTF) viewed through a telescope on December 24, 2022. It will reach its nearest point to Earth in early February.

Catch a Glimpse of a Rare Green Comet This Month

Skywatchers should be able to spot the once-in-a-lifetime spectacle with binoculars

This illustration shows the exoplanet LHS 475 b and its red dwarf host star, located 41 light-years away from Earth in the constellation Octans.

James Webb Telescope Confirms the Existence of Its First Exoplanet

The high-tech observatory is helping to study the rocky, Earth-sized world that's 41 light-years away

Kepler-1658b was the first exoplanet discovered by NASA’s Kepler Space Telescope in 2009.

This Exoplanet Is Doomed to Be Obliterated by a Star

Kepler-1658b is slowly spiraling toward a fiery demise

NASA's Perseverance rover takes a selfie on September 10, 2021.

Listen to the Sound of a Dust Devil Swirling Around on Mars

For the first time, scientists have recorded the noise of a Martian dust storm using a microphone on NASA's Perseverance rover

With the door open to give the telescope a clear view, SOFIA cruised through the Earth's stratosphere at 38,000 to 45,000 feet.

Unique NASA Observatory Will Make a Final Flight—to a Museum

SOFIA, a 38,000-pound telescope inside an airplane, spent eight years observing the universe in infrared

In this composite image from the Geminid meteor shower in 2014, more than 100 meteors can be seen.

How to Watch the Radiant Geminid Meteor Shower

The spectacle, often one of the best showers of the year, will peak December 13 to 14

The Milky Way’s black hole, Sagittarius A*

What the Image of the Milky Way's Black Hole Really Shows

This year’s picture of the swirling plasma around the massive object's edges will help to reveal more about the galaxy’s history and evolution

An artist's impression of the nearby black hole and the star that hinted to its existence. 

Astronomers Discover Closest Known Black Hole to Earth

Researchers believe there may be even nearer ones that have yet to be detected

An artist's rendition of an asteroid. 

Three Near-Earth Asteroids Were Hiding in the Sun’s Glare

One of them, which measures nearly one mile wide, might cross paths with Earth in the distant future

The exoplanet TOI-3757 b has the same average density as a marshmallow.

Puffy, Marshmallow-Like Planet Could Float in a Bathtub

Scientists found the new exoplanet located in the Auriga constellation 580 light-years away

Researchers used multispectral imaging to reveal the hidden text (which is traced in yellow above).

A Medieval Manuscript Has Revealed the Oldest Known Map of the Stars

Advanced imaging uncovered part of the Greek astronomer Hipparchus’ long-lost star catalog

The afterglow of the gamma-ray burst as captured by the Neil Gehrels Swift Observatory's X-ray telescope. 

This Powerful Gamma-Ray Blast Was the 'Brightest of All Time'

Astronomers are "in awe" of the high-energy explosion, probably caused by a giant star's death

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