Seven planets will line up for a "planet parade" on Friday, Feb. 28, as Mercury lines up with Mars, Jupiter, Uranus, Neptune, Venus and Saturn.
If a more massive cosmic impactor - measuring 5-10 kilometers - were discovered to be on a trajectory to smash into the globe just 12 months into the future, leading planetary defense experts ...
A rare planetary parade saw Mars, Jupiter, Venus, Saturn, Uranus, Neptune & Mercury align. The next such celestial event won't be visible until 2040.
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