An asteroid alert rarely starts with certainty. It begins with a faint point of light and a short run of observations, so early math can leave room for several futures. When NASA flags a near Earth ...

A 170-foot asteroid is set to race past Earth today at extraordinary speed, NASA says. Though no impact is expected, ...

At this point in history, astronomers and engineers who grew up watching "Deep Impact" and "Armageddon," two movies about the destructive power of asteroid impacts, are likely in relatively high ...

There is this saying that the more you know about something, the more likely you are to grow concerned about some aspect of it. The validity of this saying became painfully clear when reading this ...

Asteroid 2024 YR4 will not hit Earth, but it has forced planetary defense experts to confront a different kind of worst case: a significant chance that a “city killer” rock could slam into the Moon ...

JWST imaged 2024 YR4 in late March, making it the smallest object the telescope had imaged to date. The data its instruments collected indicate that based on the amount of heat it gives off, 2024 YR4 ...

"We don’t know where they are,” said NASA’s planetary defense officer Kelly Fast at the AAAS conference in Arizona this week.

Richard Binzel has been watching the skies for hazardous asteroids for more than 50 years. In 1995, he proposed the Near-Earth Object Hazard Index, later renamed the Torino scale, which rates ...

Near-Earth objects (NEOs) as a research area encompass the observational, theoretical, and modeling studies of asteroids and comets whose orbits bring them into proximity with Earth, typically with ...