The icy solar system comet C/2024 E1 (Wierzchos) is set to make its closest pass of Earth tomorrow (Feb. 17), an event known ...

Of the thousands of single-star systems in our galaxy, around 10% are known to have planets. Scientists thus expected about ...

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have for the first time identified hydrogen sulfide gas in the atmospheres of three gas-giant exoplanets orbiting HR 8799, a ...

Astronomers do not know where thousands of “city-killer” asteroids are, Nasa’s head of planetary defence has admitted.

“It would depend on many factors, including the true planet masses, dynamical interactions among planets, and presence/absence of outer (additional) planets in the system. Our latest calculation still ...