discoverynews:

Comet Siding Spring Whizzes Past Mars
A comet the size of a small mountain and about as solid as a pile of talcum powder whizzed past Mars, dazzling space enthusiasts with the once-in-a-million-years encounter.
The comet, known as Siding Spring, made its closest encounter with the Red Planet at 2:27 p.m. EDT on Sunday, racing past it at a breakneck 126,000 miles per hour. Read more

discoverynews:

Comet Siding Spring Whizzes Past Mars

A comet the size of a small mountain and about as solid as a pile of talcum powder whizzed past Mars, dazzling space enthusiasts with the once-in-a-million-years encounter.

The comet, known as Siding Spring, made its closest encounter with the Red Planet at 2:27 p.m. EDT on Sunday, racing past it at a breakneck 126,000 miles per hour. Read more