China’s abrupt cessation of tracking the interstellar comet 3I/ATLAS following its recent Mars flyby has left astronomers worldwide puzzled. The comet, which was closely observed during its encounter ...

The interstellar comet 3I/ATLAS has shifted from a routine curiosity to a physics puzzle, as NASA and other teams report that it is not moving exactly the way gravity alone predicts. As it swept past ...

Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a cold, desert world within our solar system. It has a very thin atmosphere, but ...