Debris from the 50 year-old probe Cosmos 482 crash-landed into the Indian Ocean over the weekend.

The Ursa Minor Dwarf is a small galaxy, a loose aggregation of stars, and a satellite of the Milky Way. Its gravitational ...

A Full Flower Moon shines in the sky tonight from sunset to sunrise. This month's Full Moon appears smaller than usual, just ...

An aerospace engineer explains why NASA, Space Force and other agencies are using or testing aerobraking for more ...

In this episode, Astronomy magazine Editor Dave Eicher invites you to head out and observe a planetary nebula in the ...

Jupiter’s moon Callisto passes near the planet’s northern limb, shortly before Io transits and Ganymede emerges from the gas ...

The Moon passes just 0.4° south of Virgo the Maiden's bright alpha star, Spica, early on the morning of May 10.

A bright Moon dominates the sky, passing two bright stars as Juno reaches opposition and Mercury dips toward the horizon in ...

Jupiter and Mars shine in the evening, more planets gather in the morning, and the Eta Aquariid meteors join in.

The most recent measurement of a nearby galaxy cluster is deepening a disagreement about how fast the universe is expanding — ...

Today I want to talk about something beginning observers tend to overlook. It a process of the human eye called dark ...

Vesta’s classification has vexed astronomers for decades, but a recent study is forcing planetary scientists to reevaluate ...