L-1: One Day until Launch

Remember to join us right here at 12:45 a.m. PDT, 3:45 a.m. EDT for live coverage of the OCO-2 launch countdown!

In the meantime, we’ve posted a couple of videos to bring you up to speed on the mission to come — and how the OCO-2 spacecraft and the United Launch Alliance Delta II rocket got to this point.

Check out this webcast, which explains OCO-2’s quest for carbon dioxide:

Learn how the observatory and rocket were readied for liftoff: