NASA reduces likelihood of asteroid impacting earth to 1.5%
NASA said Wednesday that new data collected overnight cut the probability of asteroid 2024 YR4 hitting Earth to 1.5%. The ...
Knowridge10 小时
Is the universe really the same in every direction?
For a long time, scientists have believed that the universe looks the same no matter where you are or which direction you look. This idea, called the Cosmological Principle, is a key assumption in ...