Brandon Specktor

The James Webb Space Telescope has discovered a cosmic 'peanut' and 'fluff ball' that happen to be two of the four oldest galaxies in the known universe.

The James Webb Space Telescope has discovered a massive chain of 20 galaxies in the early universe, raising questions about the formation of the largest structures in the cosmos.

In the glare of the sun, an unknown number of near-Earth asteroids move on unseen orbits. A new generation of space telescopes could be our best defense against potential disaster.

If a mile-wide asteroid is discovered hurtling toward Earth, our survival might depend on launching 1,000 spacecraft — or one well-placed nuke.

NASA's Lucy spacecraft has found a hidden asteroid "moon" swirling around the larger main belt asteroid Dinkinesh, affectionately known as Dinky.

A shrieking skull, a cackling witch, a scampering black widow and other cosmic illusions haunt our skies. Which do you think is the scariest nebula in the universe?

NASA's Parker Solar Probe has reached a record-breaking speed as it gets a gravitational assist from Venus to fall closer to the sun's scorching surface.

NASA researchers plan to launch three rockets carrying scientific instruments toward the moon's shadow on Oct. 14, to study changes in the atmosphere brought about by the annular solar eclipse.

It's not too late to buy safe, high-quality eclipse glasses before the Oct. 14 annular solar eclipse in North America. Just make sure you're buying from an approved vendor.

You can't stare at the sun, so how do you watch an eclipse? By reflecting it off of a disco ball, a team of astronomers suggests.

Asteroid Dimorphos, which NASA intentionally hit with a rocket during its DART mission in September 2022, is behaving in unpredicted ways.

Astronomers found evidence of multiple stellar-mass black holes lurking in the nearby Hyades cluster, just 150 light-years from Earth.

Dubbed 'Luminous Fast Coolers,' this new class of extreme cosmic explosion is incredibly rare — and unbelievably bright.

Gigantic jets, which are 50 times more powerful than typical lightning bolts and can reach the edge of space, were seen erupting out of Hurricane Franklin near Puerto Rico.

See Earth's ancient companion like never before with this gallery of incredible satellite, telescope and lunar orbiter images of the moon.

Born less than 400 million years after the Big Bang, Maisie's galaxy is officially one of the four oldest galaxies ever discovered, a new JWST study reveals.

Gargantuan storms on Saturn can wrap around the entire planet and be seen for months. New research suggests their impacts persist hundreds of years longer than experts thought.

A skyscraper-size asteroid was revealed in year-old telescope data thanks to a new algorithm that could rock the way near-Earth objects are discovered.

NASA engineers have received a "heartbeat" signal from Voyager 2, bringing hope that they may be able to reestablish contact with the probe months ahead of schedule.

After accidentally shifting Voyager 2's antenna by two degrees, NASA fell out of contact with the interstellar probe on July 21. On Aug. 4, the agency succesfully reset the probe's antenna, restoring communications.

A gorgeous new image of a star system 5,000 light-years from Earth could finally explain how Jupiter-size planets are born from chaotic fields of gas.

Carl Sagan's personal copy of the Voyager Golden Record contains 27 pieces of music and 22 minutes of sound meant to capture the beauty of life on Earth.

A slowly rotating, ultrabright object 15,000 light-years from Earth defies every logical explanation that astronomers have thrown at it.