Why asteroid 2024 YR4 is unlikely to hit Earth in 2032 and how scientists keep track
In 2021, NASA gave the all-clear to another potentially worrisome asteroid, Apophis, after new telescope observations ruled ...
Aviation Week15 小时
NASA Faces The Promise And Peril Of Moondust
As NASA plans to establish a permanent Moon base via its Artemis program, it is looking to avoid the dangers of lunar ...