telescope

Astronomers released 25 new images to celebrate the 25th anniversary of the Chandra X-Ray Observatory's launch.

See 25 Stunning Images of the Cosmos From the Chandra X-Ray Observatory as It Celebrates 25 Years in Space

Chandra, the world’s most powerful X-ray telescope, has been peering at black holes, stellar explosions and dark energy for a quarter-century

The central region of the Omega Centauri globular cluster, where the Hubble Space Telescope found strong evidence for a medium-sized black hole.

Astronomers Spot Rare, Mid-Sized Black Hole in Our Galaxy

The black hole, if confirmed, is in the star cluster Omega Centauri, about 17,700 light-years away, and it could hold lessons about how such structures are formed

An artist’s depiction of HD 189733b encountering an eruption of x-rays from the star it’s orbiting

This Nearby Exoplanet Is Hot, Dangerous—and Smells Like Rotten Eggs

Located about 64 light-years away from Earth, the world is the first place astronomers have detected hydrogen sulfide outside our solar system

The Milky Way spreads across the night sky above the Vera C. Rubin Observatory. 

This Revolutionary New Observatory Will Locate Threatening Asteroids and Millions of Galaxies

Beginning next year, the Vera C. Rubin Observatory will use the world’s largest digital camera to give us a whole new view of the universe

The planet-forming disk is made of gas and dust.

This Giant Cosmic 'Butterfly' Is a Planet-Forming Disk

New research has confirmed that the celestial object may be the biggest of its kind ever found

Euclid’s new image of star-forming region Messier 78, a nebula that lies in the constellation Orion.

See Five Dazzling New Images of the Cosmos, Captured by Europe's Space Telescope

With its visible and infrared photography, Euclid—known as the "dark universe detective"—is helping astronomers better understand dark matter and dark energy

A close-up of the "mane" of the Horsehead Nebula, located some 1,300 light-years from Earth. This view was captured by the James Webb Space Telescope's Mid-Infrared Instrument.

See New Images of the Horsehead Nebula, Captured in Striking Detail by the James Webb Telescope

The beautiful infrared imagery features one of the best known locations in space to study the evolution of stars and interstellar matter

A close-up of the Dragon's Egg Nebula, with two mismatched stars inside.

A Stellar Collision Birthed the 'Dragon's Egg' Nebula, a Puzzling Structure in the Milky Way

The colorful cloud of gas and dust has a violent origin—and this explains the unusual traits of two massive stars within it, astronomers say

An artist's illustration of Gaia BH3 and its companion star's "wobbling" orbit.

Astronomers Discover a 'Sleeping Giant' Black Hole in Our Galaxy—the Second-Closest Known to Earth

Called Gaia BH3, the dormant black hole is 33 times more massive than the sun, making it the largest recorded stellar black hole in the Milky Way

A slice of the largest 3D map of the universe ever made, depicting 600,000 galaxies across the cosmos—less than 0.1 percent of the map's total. Earth is at the tip in the lower center, and the most distant galaxies represented are 11 billion light-years away.

Dark Energy Could Be Evolving Over Time, Raising Questions About the Nature of the Cosmos

The largest 3D map of the universe ever made hints that dark energy might not be a constant, though the findings must be backed up with more data

The 2017 total solar eclipse as seen from Madras, Oregon

Five Fascinating Science Projects Using the Total Solar Eclipse to Illuminate New Discoveries

The NASA-supported experiments are mobilizing legions of researchers and volunteers to capture wide-ranging observations during totality, from amateur radio operations to elusive solar plumes to unusual animal behavior

The Whirlpool Galaxy (also known as M51), located 31 million light-years from Earth, is a particularly radiant object seen during the Messier marathon. This image was captured by the Hubble Space Telescope—skywatchers looking through a backyard telescope or binoculars would see the galaxy in far less detail.

What It Takes to Complete the Ultimate Skywatching Endurance Challenge

The "Messier marathon" prompts space hobbyists to spot 110 celestial objects in one night, and the best time to try it is in March

An artist’s rendering of a pantheon of planets similar to Earth

This Planned NASA Telescope May Help Us Identify Worlds Like Our Own

The innovative Habitable Worlds Observatory will offer ways to detect signs of life on other planets

An image of an odd radio circle called ORC 1. ORCs can be much wider across than the Milky Way galaxy and are large enough to surround entire galaxies.

Giant, 'Odd' Circles of Radio Waves in Space May Finally Have an Explanation

The mystifying orbs could be caused by galactic winds, propelled by a period of rapid star formation and death

A photo of Saturn taken by the Hubble Telescope last October. Small dark marks called ring spokes are visible on the planet's left side, just inside the widest black band of space between rings.

What Are These Mysterious Dark 'Spokes' on Saturn's Rings?

A Hubble image highlights the seasonal features, which scientists think could be caused by interactions between the planet's magnetic field and solar wind

Data from the Hubble Space Telescope produced this new image of the galaxy UGC 8091.

See the 'Sparkling Snow Globe' Galaxy Captured by the Hubble Space Telescope

The new, holiday-inspired image features UGC 8091, an "irregular" dwarf galaxy in the constellation Virgo

The supernova remnant Cassiopeia A, captured by NASA's James Webb Space Telescope in near-infrared light. The image shows the expanding material from the blast colliding with gas released by the star before the explosion.

James Webb Telescope Captures Image of Supernova That 'Absolutely Shattered' a Star

The new image gives astronomers a near-infrared look at the stellar explosion called Cassiopeia A, located around 11,000 light years away from Earth

The consellation Orion and other stars in the sky in Alberta, Canada, in 2019.

An Asteroid Will Eclipse a Red Star in the Constellation Orion Monday Night

In the U.S., the rare event will only be visible from southern Florida, but it will be livestreamed from Italy for viewers everywhere

Half a century on, Kohoutek may be due a little more respect. Though it disappointed the media and the public, it proved to be a bonanza for serious scientists.

The 'Comet of the Century' Failed to Impress, but It Wasn't Such a Disaster After All

Highly anticipated before its arrival in late 1973, Kohoutek became an interplanetary punchline. But astronomers may have gotten the last laugh

An artist's rendition of the detection of the cosmic ray by the Telescope Array experiment. When high-energy cosmic rays reach Earth's atmosphere, they collide with and break apart atomic nuclei, creating a shower of particles that is picked up by detectors on the ground.

Scientists Mystified by Rare, High-Energy Cosmic Ray, the Most Powerful Since 1991

Researchers have been unable to locate an obvious source for the particle—it seems to have traveled from an empty spot in space

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