"For asteroids of the size scale relevant to planetary defense (i.e., ∼50-500 m), the mass can only be directly measured ...

Estimating a mass for a potentially hazardous asteroid (PHA) is perhaps the single most important thing to understand about ...

A 140-foot asteroid is set to sweep past Earth today, and it seems everyone is taking notice. Astronomers have been tracking the space rock, officiall.

NASA's Lucy mission flyby asteroid Dinkinesh (aka 1999 VD57). Credit: NASA Goddard Space Flight Center Produced, Edited, and ...

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

NASA is closely monitoring a massive 140-foot asteroid, 2026 CU1, as it zooms past Earth today at nearly 18,803 miles per hour.

Asteroid 2026 CU1 will sweep past Earth this week at high speed, close enough to attract attention yet deemed safe, raising ...

NASA confirms the flyby of a 410-foot asteroid, 2025 YU15, moving at a speed of 21,306 miles per hour today. Despite its proximity, scientists assure it poses no immediate threat.

A car sized asteroid can sound like a cliffhanger, yet the real tension lives in the math. NASA’s trackers list 2026 CR2 for a close pass on Feb. 17, 2026, moving about 12,616 miles per hour, with an ...

Early last year, asteroid 2024 YR4 caught the public’s attention as its chances of hitting Earth in the near future climbed to 3.1 percent. This was the highest probability of a strike by an object of ...

An illustration of the asteroid Apophis, which will make a close flyby of the Earth in April 2029. Credit: ESA Science Office A niche corner of the commercial space sector is attracting attention from ...

The space rock has a 4.3% chance of striking the Moon in six years—and it could generate a flash nearly as bright as Venus. Reading time 2 minutes A large rocky asteroid will make a close approach to ...