As the month closes, the planet spans 37″ and the Sun illuminates 28 percent of its Earth-facing hemisphere. Like Venus, Mercury passed through inferior conjunction in late March and grows ...

The first super pressure balloon flight of NASA's New Zealand Balloon Campaign reached its float altitude after lifting off ...

A new UCLA-led study shows that not only did the eruption not warm the planet, but it actually reduced temperatures over the Southern Hemisphere by 0.1 C. The reason: The eruption formed smaller ...