The Universe

The latest findings could have important implications for our understanding of how massive stars form.

"'Are we alone?' is one of the biggest unanswered questions," said study first author Howard Chen.

There is significant debate among astronomers on just how fast the universe is expanding,

The explosion occurred on the surface of a pulsar around 11,000 light-years away.

Mercury transits take place only around 13 times a century.

The space rock could measure up to 3,248 feet in diameter.

Human's evolved through a series of highly unlikely events—so finding another intelligence like us would be like winning the lottery many times over.

The comet is only the second confirmed interstellar object to have passed through the solar system.

The Exploration Extravehicular Mobility Unit builds on the designs of spacesuits currently used by astronauts when they conduct spacewalks outside the International Space Station.

"I can't believe we are the only living entity in the universe," Didier Queloz said

Researchers estimate that the explosion lasted for approximately 300,000 years.

"Simulations and movies like these really help us visualize what Einstein meant when he said that gravity warps the fabric of space and time," the creator of the images said.

The building was constructed as a facility to quarantine astronauts and the material they brought back from the moon during the Apollo program.

In 2015, an astrophysicist discovered that the star would undergo irregular dips in brightness over a period of days or weeks.

"We have never seen anything like this in the 24 years we have studied the supermassive black hole," researcher Andrea Ghez said.

Astronomers found a "runaway star," dubbed PG 1610+062, in the outer halo of the Milky Way.

Researchers detected gravitational waves—ripples in space-time—emanating from a cataclysmic event around 900 million light years away.

Dark matter is mysterious substance that appears to make up about 27 percent of the universe's mass.

The exoplanet, dubbed WASP-121b, is located around 900 light-years from Earth.

The three planets are among the smallest and closest exoplanets found to date, according to astronomers.

"This has been one of the rare opportunities when the signs of aging could be directly observed in a star over human timescales," Meridith Joyce said.

A team of astronomers has discovered the "fastest eclipsing white dwarf binary" star system in the known universe.

Astronomers have cast new light on a huge, empty expanse of space that surrounds our galaxy known as the Local Void.

The observatory is expected to map around 100,000 galaxy clusters—the largest known gravitationally bound structures in the universe—and three million supermassive black holes.

The black hole is located at the center of the spiral galaxy NGC 3147 around 130 million light-years away from Earth.

Einstein's general theory of relativity beautifully describes the nature of gravity and its effect on large objects in the universe. However, there are alternative explanations.

Astronomers have measured the spin rate of five, distant supermassive black holes for a study published in the Astrophysical Journal.

Our universe is made up of three spatial dimensions—width, depth and height—as well as the additional dimension of time.

The Teegarden star—a red dwarf with a mass less than a tenth that of the sun—is located just 12.5 light-years away in the constellation Aries.

Before its mission ended in September 2017, NASA's Cassini probe conducted a series of dives between Saturn's cloud tops and its rings.