Professor Avi Loeb, a theoretical physicist and cosmologist from Harvard University, told MailOnline why he thinks a new ...

A mysterious object, first observed hurtling across the solar system on July 1, has now been identified as "very likely to be the oldest comet ever."  The interstellar object 3I/ATLAS could be around ...

Boffins were left confused at the beginning of this month after they spotted a foreign object hurtling through space and ...

A newly discovered object from deep space may be the oldest comet ever observed—possibly more than 7 billion years old, and ...