"These objects really could be anywhere in the solar system at any given time." One million alien visitors from another star system could already be lurking in the solar system. We aren't talking ...

The film discusses the formation of the solar system, originating from a vast cloud of gas and dust over 4.5 billion years ago. It highlights the role of comets, which may contain remnants of the ...

The stars as seen from Earth would have looked dimmer 14 million years ago, as the solar system was in the middle of passing ...