Brandon Specktor

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.

Stars could be sliced in half by "relativistic blades," or ultra-powerful outflows of plasma shaped by extremely strong magnetic fields, an unpublished paper claims.

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.

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.

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.

Scientists studying a star system in Orion witnessed one of the most powerful stellar eruptions ever seen — and it could be devastating to nearby planets.

The potentially hazardous asteroid 2023 FM is larger than a 40-story building and will zoom within 7.5 lunar distances from Earth on Thursday, April 6, according to NASA.

The newly discovered asteroid 2023 DW could collide with Earth in February 2046, although the odds of an impact are low.

A broken hill, an ancient crater and the human tendency to find faces everywhere may explain the teddy bear on Mars.

New time-lapse images of the beautiful Butterfly Nebula come closer to explaining its spectacular strangeness.

UFO reports from U.S. military personnel are flooding the government's new All-Domain Anomaly Resolution Office (AARO).

Where does the sky end and space begin? According to a new study, the edge of space is a lot closer than you think.

An uncharted region of space known as the "zone of avoidance" lurks behind the Milky Way's center – and astronomers just found an enormous, multi-galaxy structure there.

The U.S. government has officially started to explain some of the most infamous UFO encounters of the last decade, with China and weather balloons as top offenders.

A recent report about pitch-black "phantom" UFOs in the skies over Ukraine has been discredited by Ukrainian scientists and by Harvard astrophysicist Avi Loeb.

A partial solar eclipse on Oct. 25 looked like an epic ring of fire when viewed by the Hinode satellite, new footage reveals.

A monster merger between two black holes sent ripples through time and space, and may prove Einstein right about a gravitational phenomenon called precession.

When large asteroids hit the Earth, they trigger mass extinctions and climate chaos. But could an asteroid destroy the planet entirely?

Why are sunspots black? According to astronomers, it may be a big, cosmic optical illusion.

New research suggests that a strange 'ripple' is causing the Milky Way's stars to vibrate out of step, and an ancient collision with Sagittarius may be to blame.

Astronomers are using the James Webb Space Telescope to look back in time. How is this possible? It's just the nature of light, according to NASA.

The U.S. Navy admitted that it has unreleased videos of UFO encounters but refused to share them due to 'national security concerns.'

Dozens of 'phantom' and 'cosmic' UFOs have been detected in the skies over Ukraine, a new government report claims.