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The most recent interstellar visitor was crisscrossing our galaxy for some 10 to 12 billion years before it came near the Sun.

This month’s episode showcases the Big and Little Dippers, now placed high in the northern evening sky. We'll also track down all five bright planets and watch for meteors from Halley's Comet.…

Scientists have identified at least seven carbon-rich molecules that NASA's Curiosity rover detected on Mars, and they're more complex than any found before.

Engineers have turned off an instrument that measured the density of charged particles in an effort to keep the aging Voyager 1 operational.

What factors impact how long it takes for a supermassive black hole binary to merge?

The Moon occults Regulus in twilight or bright afternoon. Venus lines up between Aldebaran and the Pleiades. Sirius nears heliacal setting.

The James Webb Space Telescope has taken a deep look at the rings around the ice giant Uranus and found a new mystery to be solved.

NASA has announced that the Nancy Grace Roman Space Telescope is under budget and ahead of schedule, set for a September launch.

The Proba 3 mission flies two spacecraft in precise formation to create an artificial eclipse and obtain close views of the solar wind as it leaves the Sun.

Astronomers have located the edge of the Milky Way’s star-forming disk, showing that it extends 40,000 light-years out from the center.

State-of-the-art simulations shed light on how galaxies die — and how we can determine the cause of death.

The waxing Moon this week visits Venus, the Pleiades, and the Jupiter-Pollux-Castor triangle, then it occults Regulus in a bright sky.

The crew of Artemis 2 reported six flashes of light while passing behind the Moon. We've seen those kinds of flashes before.