Ian O'Neill

According to observations by Hubble and Kepler, the universe has only just begun to produce habitable worlds — what does this mean for the evolution of intelligent life?

In 2015, a stellar-mass black hole in a binary star system underwent an accretion event causing it to erupt brightly across the electromagnetic spectrum.

The interstellar asteroid that zoomed past Earth last month is like nothing we’ve seen before, new observations reveal.

The universe shouldn't exist, according to new ultra-precise measurements of anti-protons.

Two methods that scientists use to measure the expansion of the universe produce different answers. A recent episode of NASA's ScienceCasts video series explores this conundrum.

When exposed to ultraviolet light, interstellar ice may act more like a liquid than a solid, a new study has found.

After already traveling millions of miles into space, a NASA asteroid probe will soon return to Earth to take advantage of the planet's gravity.

The Cassini-Huygens mission has revealed Saturn's huge moon Titan in all its frigid, exotic glory.

NASA's Mars rover Curiosity has discovered boron in Gale Crater — new evidence that the Red Planet may have been able to support life on its surface in the ancient past.

Galactic winds that bowled through ancient galaxies and strangled star formation may have also created reservoirs of gas where star formation could continue, a new study shows.

Physical systems that are out of equilibrium may naturally produce self-replicating chemical reactions, one of the necessary steps in the origin of life.

A new photo of the red "supergiant" Antares is the best ever captured of a star other than the sun, researchers said.

Most "eclipses" don't involve the sun and the moon at all.

For the first time, scientists have demonstrated laser communications between a microsatellite and a ground station while using the quantum nature of photons to secure the data being transmitted.

Is our sun fundamentally different from other "sun-like" stars? This question highlights an ongoing controversy about whether our nearest star is unique or, in fact, an "ordinary star."

Astronomers have observed the eating habits of a protostar — and like any youngster, it has an affinity for fast food.

New work shows spiraling outflows of gas swirling from a newborn star.