There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

Astronomers have captured images of two stellar explosions—known as novae—within days of their eruption and in unprecedented ...

Highly active sunspot AR3664 grew tremendously in this three day time-lapse. Credit: Space.com | footage courtesy: NASA / SDO ...

The bottom line Our experience of time may be subjective and limited to a sense of now, but on the cosmic scale, time seems to be a feature of entangled relationships between objects and not a feature ...

WASHINGTON (AP) — Time moves a tad faster on the moon. Now an international group of astronomers has joined calls to give the moon its own clock so that future space missions can keep track of minutes ...

A newly proposed type of supermassive black hole surrounded by a dense gas shell may account for the small red dots seen in ...

St. Augustine said of time, “If no one asks me, I know what it is. If I wish to explain to him who asks, I don’t know.” Time is an elusive concept: We all experience it, and yet, the challenge of ...

This month will bring some striking celestial sights, including one of the year’s best meteor showers and a glowing ...

People usually apply to graduate programs at research universities in Washington. But uncertain funding means there could be ...