Astronomical milestones of 2015

Pluto stole the spotlight, but plenty of other stuff happened in space this year


FORGET PLUTO  The Mercury orbiter MESSENGER (shown) crash-landed into the planet in one of several monumental moments for space missions this year. 

NASA, JHUAPL, Carnegie Institution of Science

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Astronomy

From the Nature Index

Paid Content