The discovery of a vast star-like disk of gas and dust surrounding planet OTS44 challenges the notion of what differentiates a planet from a star, and of how their origins differ.
NASA is years away from having new spacesuits for its deep-space astronauts despite spending nearly $200 million on three separate development efforts over the past decade.
The experiment, which arrives at the ISS on Saturday, will test a technique to reproduce and analyze telomeres, the DNA-protecting tips of chromosomes.
NASA hasn't planned any follow-on missions for Enceladus, but it could be selected for a current or future round of planetary missions.
Astronomers suspect that gravitational waves, first theorized by Albert Einstein, kicked the rogue black hole out of its galactic core after the collision of two galaxies.
Scientists don't know how the cosmic odd couple came to exist, or how long their intimate tango will last.
Conditions on Saturn's largest moon could make Titan the best place in our solar system for us to test ideas about the diversity of life in space.
Watch a live webcast of SpaceX's latest rocket launch, planned for early in the morning on Tuesday. Elon Musk is looking to remain aggressive as Amazon founder Jeff Bezos's aerospace company Blue Origin starts signing up customers.
Mars' diminutive moon Phobos may be the latest in a series of increasingly smaller moons that formed from rings of debris that circled the Red Planet in its past, and likely will again in its future.
Astrophysicists at MIT have gained new insight into the energy that radiates from a feeding black hole as it tears apart a nearby star.