Earth just got itself a second moon, an asteroid named 2025 PN7. Astronomers have spotted the rock, researchers confirmed this week, saying that it qualifies as a “quasi moon”. The small space rock ...

The planet’s rotation fluctuates as it travels around the sun, and measurements suggest we’re losing more than a millisecond during the long days of summer. By Jacey Fortin This article was updated ...

Artificial lighting across our planet has increased sharply over the past decade, rising much faster than the global ...