Robert Lea

Astronomers have discovered the smallest dwarf galaxy ever seen. It is a mystery how the satellite galaxy of Andromeda survived the blistering conditions of the early universe.

The moshing galaxies of Arp 105 dazzle in the Space Image of the Day Monday (March 10), which comes courtesy of Hubble.

Strange events at the heart of the Milky Way could point toward a new dark suspect that annihilates to influence the chemistry of the cosmos.

If gravity arises from entropy, scientists could unite Einstein's general relativity with the quantum realm while shedding light on dark matter and dark energy.

Mysterious planetary mass objects that wander the cosmos alone could be created when young star systems clash. They aren't planets or stars, but are in a cosmic class of their own.

A hidden monster black hole in the Large Magellanic Cloud fired runaway stars at the Milky Way at millions of miles per hour.

The X-37B Orbital Test Vehicle-7 U.S. Space Force’s dynamic unmanned space plane has successfully returned to Earth after a novel aerobraking maneuver during its 7th flight.

NASA engineers are turning off two instruments on Voyager 1 and Voyager 2 to ensure these twin spacecraft can continue exploring interstellar space.

An X-ray signal that has puzzled scientists for 45 years was the "death knell" of a planet ripped apart by a white dwarf star, data from NASA's Chandra observatory has revealed.

The solar system could be packed with 1 million alien visitors, space rocks shaken away from our cosmic neighbor Alpha Centauri, new research has revealed.

Astronomers have used the James Webb Space Telescope to investigate the atmosphere of a cosmic body that is either a "failed star" brown dwarf or a rogue planet.

Scientists have used the wobble of the Milky Way and what are known as "cosmic lighthouses" to shine a light on the mystery of dark matter.

Astronomers have discovered that billions of comets in an icy shell around the solar system called the Oort Cloud mimic the spiral structure of the Milky Way.

The James Webb Space Telescope has joined the hunt for dark matter, aiding cosmic detectives in searching for signals indicating axion decay.

Astronomers were surprised to see the behavior of ultrafaint dwarf galaxies located in the Hydra cluster.

A mysterious burst of radiowaves with more energy than the sun emits in a year has been traced back to a cosmic graveyard dead galaxy filled with ancient stars.

The chances of asteroid 2024 YR4 hitting our planet are now zero. Last week, it was the riskiest asteroid to hit our planet since records began.

Do top quarks, nature's heaviest elementary particle, obey Einstein's rules at all times of day and night? Scientists at the Large Hadron Collider have the answer.

Scientists have discovered more about the process that causes black holes to "leak" energy to their surroundings, finding the faster they spin, the more energy is extracted.

Astronomers have discovered that many infant stars born in stellar nurseries of the early universe may have preferred "fluffy" stellar blankets.

Breathe a sigh of relief! NASA has dropped the risk of asteroid 2024 YR4 impacting Earth in 2032 to 1 in 360, just days after it became the highest-risk asteroid since records began.

Astronomers have studied 3,600 supernovas to discover diversity in exploding white dwarf stars, a vital tool in the investigation of dark energy.

Gamma rays detected by NASA's Fermi spacecraft indicate that microquasars are powered by small black holes slowly devouring stars. They pack quite a punch, bombarding Earth with cosmic rays.

Using a revolutionary dark energy camera, astronomers have discovered the largest haul of "missing link" intermediate-mass black holes ever seen, but there should have been more.