The third interstellar object ever observed is in our neighborhood—for now. And, asteroid Bennu could contain dust from ...

Massive interstellar object 3I/ATLAS, larger than Manhattan, shows unusual glow pattern and planetary alignment that Harvard physicist calls potentially technological.

Harvard physicist Avi Loeb suggests interstellar object 3I/ATLAS could be a nuclear-powered spaceship based on its unusual glow and trajectory through our solar system.

Interstellar object 3I/ATLAS — which is zooming through our inner solar system — appears to be emitting its own light, according to Harvard astrophysicist Avi Loeb. The observation by L… ...

The core of Jupiter, the largest planet in our solar system, has long been a source of mystery for astronomers: an object so unfathomably dense and hot that it defies comprehension. Conventional ...

The paper presented several anomalous characteristics of the object, which could indicate that it is not a comet at all but instead a directed craft.

Learn how scientists used ancient raindrops preserved in meteorites to accurately date Jupiter’s creation for the first time.