NASA is monitoring a recently discovered asteroid called the 2024 YR4, which is around 150-300 feet wide and is the most hazardous space rock detected in more than 20 years. Astronomer and space ...

The temporary belts, one of which still remains, were filled with high-energy electrons and protons and were found by a ...

Scientists believe the exoplanet HD 20794 d, six times the mass of Earth, could harbour liquid water on its surface.

Fluorite triplet TakahashiTokyo, Japan The ​​FCT-65D is a low-dispersion Fluorite Triplet refractor. It has a 400mm focal length and a f/6.2 focal ratio, and a high Strehl ratio of .98. It also comes ...