Interstellar object 3I/ATLAS reaches its perihelion, prompting Harvard's Avi Loeb to suggest it's an 'alien mothership.' ...
ESA's ExoMars Trace Gas Orbiter was able to collect high-resolution imaging and spectroscopic data of the 3I/ATLAS comet.
Astronomers are hustling to use interplanetary spacecraft to study the interstellar comet dubbed 3I/ATLAS while the sun is ...
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