"They assumed great risk so we could understand what lies beyond. the heavens. Americans are grateful for their service, and they will always be cherished."
"The last week of January brings, every year, a confluence of sobering anniversaries that we honor this Thursday with our Day of Remembrance. On Jan. 27, we marked 41 years since the loss of the crew of Apollo 1, and with it NASA's loss of innocence. The Apollo fire made it clear that we bring to spaceflight the same human flaws as our forebears who first sailed the ocean or went aloft in stick-and-wire contraptions. Successive generations have known the same harsh truth; the crew of Challenger was lost to us on Jan. 28, 22 years ago, and on Feb. 1 we mark five years since the loss of Columbia."