The ‘comet of the century’ approaches closest point to Earth
C/2023 A3 Tsuchinshan-ATLAS, the brightest comet in 100 years, will be visible to the naked eye from October 12
C/2023 A3 Tsuchinshan-ATLAS, the brightest comet in 100 years, will be visible to the naked eye from October 12
All galaxies, and the Milky Way is no exception, are dying: They no longer form stars as before, and will end up completely extinguished
The concept of day and night on Earth is very different from that of other worlds, where a day can last longer than a year or areas of a planet can experience eternal night
You may need a pair of binoculars to catch Mercury and Uranus, which don’t shine as bright as the other planets. But the five-planet array will be visible from anywhere on Earth, as long as you have clear skies
Radar images taken by a probe in 1991 suggest there was an eruption on the planet that was double that of Hawaii’s Kilauea volcano