NASA estimates that roughly 25,000 near-Earth asteroids measuring at least 140 meters across orbit in our planetary neighborhood, but surveys have so far cataloged only about 40% of them. That gap ...

“What keeps me up at night is the asteroids we don’t know about," said NASA's planetary defense chief.

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

Earth's cosmic neighbourhood is more dynamic than imagined, hosting temporary 'mini-moons' captured by gravity and ...

Thousands of “city killer” asteroids remain undetected, NASA warns, and no ready spacecraft exists to stop one. A recent close call exposed gaps that scientists say still leave Earth vulnerable.

Asteroid 2022 RD2 is a near-Earth object that could become a temporary moon, then later a potential crash risk for the planet later this century. Credit: NASA / JPL-Caltech illustration Scientists ...

NASA planetary defense experts report that mid-size near-Earth asteroids could cause regional damage, with detection and deflection remaining limited, according to New York Post and AAAS reports.

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 ...

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 ...

The National Academies of Sciences, Engineering and Medicine will establish an ad-hoc committee to investigate and make recommendations about a space-based telescope's capabilities regarding the ...

Barnard's Star is a small, dim star of the type that astronomers call red dwarfs. Consequently, even though it is one of the closest stars to Earth, such that its light takes only six years to get ...