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Comet Hartley 2 Makes Closest Pass by Earth in 24 Years

A comet passed

Comet Hartley 2

The close Earth pass

"It's unusual

Backyard stargazers

To view

This

By Oct. 22, the

Deep Impact's

Comet Hartley 2 is

The aim of Deep

The

Now,

  • Video

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Space.com is the premier source of space exploration, innovation and astronomy news, chronicling (and celebrating) humanity's ongoing expansion across the final frontier. Originally founded in 1999, Space.com is, and always has been, the passion of writers and editors who are space fans and also trained journalists. Our current news team consists of Editor-in-Chief Tariq Malik; Editor Hanneke Weitering, Senior Space Writer Mike Wall; Senior Writer Meghan Bartels; Senior Writer Chelsea Gohd, Senior Writer Tereza Pultarova and Staff Writer Alexander Cox, focusing on e-commerce. Senior Producer Steve Spaleta oversees our space videos, with Diana Whitcroft as our Social Media Editor.