ARLA/CLUSTER: Asteróide vai passar perto da orbita da Lua entre 11 e 12 de Outubro

[João Costa > CT1FBF]

Asteroid to sweep close October 11-12

Asteroid 2012 TC4 will pass farther than some thought at first, but
still within the moon’s orbit. How to watch online. Plus, how it’ll be
used it as a test of Earth’s global asteroid defense system.

Read more at:
http://earthsky.org/space/near-earth-asteroid-2012-tc4-close-pass-october-2017