Watch online today as asteroid 2020 SW swoops in for its closest approach to Earth on Thursday. The asteroid will pass just 7% of the moon's distance. Charts here for telescope users. How to watch online.

The International Space Station underwent an unscheduled reboost in orbit yesterday, to avoid a collision with an unknown piece of space junk. The 3-man crew was ordered to shelter, but is safe.

A beautiful new image of Jupiter from the Hubble Space Telescope - captured in August 2020 - shows the planet's icy moon Europa as well as several famous storms in Jupiter's atmosphere.

For the first time, astronomers have detected a planet orbiting a white dwarf star. If further confirmed, the discovery shows that some planets could survive the destruction of their sun-like stars, and some might even remain potentially habitable.

It has long been a sport for skywatchers to spot the youngest possible crescent moon after sunset, with the eye alone. What does it take to see a very young moon? Details here.

Astronomers in Canada say they have found evidence for 45 new tiny moons orbiting Jupiter, and that the planet may have a staggering 600 such moons in total.

The sun has passed from one of its 11-year activity cycles into another. Scientists predict the new cycle - Solar Cycle 25 - will be about as calm as the previous one.

Is there microbial life in the atmosphere of Earth's closest neighbor, Venus? An international team of astronomers has found tentative but highly compelling evidence.

The new work reveals dark matter haloes as active regions of the sky, teeming with not only galaxies, but also radiation-emitting collisions that could make it possible to find dark matter haloes in the real sky.

Keep track of where NASA's Mars 2020 Perseverance is on its journey through space toward its February 18, 2021, landing on Mars. This web app shows you where spacecraft is right now.