Happy Birthday Carl!
Your Chance to Speak for Earth!
NASA’s New Horizons spacecraft is currently about 3 billion miles (5 billion kilometers) from Earth, en route to a historic encounter to reconnoiter Pluto and its moons– worlds that will in 2015 become the farthest-ever frontier of human exploration. Eventually, New Horizons will become the fifth spacecraft to leave the solar system, following Pioneers 10 and 11 and Voyagers 1 and 2 on an endless voyage through interstellar space. Each of our first four interstellar probes carries a message from the people of Earth to any extraterrestrial who might someday encounter them. New Horizons carries no such message.…but it’s not too late to add one!
The moon really does rotate, even though it doesn’t look like it from here. Because the moon is ‘tidally locked' to the Earth, that means that it always has one face pointed towards us. However, it also means that the time it takes to rotate once is the same as the time it takes to go around the Earth — 27 days.
The only people who have ever seen the far side of the moon for themselves are the various astronauts that flew on the Apollo missions back in the 60s and 70s. This video may not take the place of that kind of experience, but it at least lets us share a bit of the wonder.
Rotating Moon from LRO (by APODVideos)
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