The collapse of U.S.A.I.D. at the hands of President Trump and Elon Musk is already leaving gaping holes in vital health care ...

NASA and European scientists explain how they calculate the probability of the space rock 2024 YR4 impacting our planet, and why it’s not yet time to worry.

Since December, astronomers have been carefully studying whether an asteroid between 130 and 300 feet long will impact the ...