Big Pictures kompletter Hubble-Weihnachtskalender


Big Picture hatte ja einen Weihnachtskalender mit tollen Bildern des Hubble-Teleskops, der ist jetzt natürlich komplett und sieht fantastisch aus. Und beim Betrachten dieses Bildes hier, da fühlt man sich auf einmal ziemlich klein, wenn man die Hintergrundgeschichte dazu kennt:

This image is called the Hubble Ultra Deep Field, and it is by far my favorite Hubble image. Starting in late 2003, astronomers pointed Hubble at a tiny, relatively empty part of our sky (only a few stars from the Milky Way visible), and created an exposure nearly 12 days long over a four-month period. The result is this amazing image, looking back through time at thousands of galaxies that range from 1 to 13 billion light-years away from Earth. Some 10,000 galaxies were observed in this tiny patch of sky (a tenth the size of the full moon) - each galaxy a home to billions of stars. Go outside tonight, take a ball-point pen with you, and hold it up in front of the night sky at arm's length. The tip of your pen is about 1 millimeter wide, and at arm's length, it would cover the 10,000 galaxies seen in the Ultra Deep Field image. That's how unbelievably massive the visible universe is.

Hubble Space Telescope Advent Calendar 2008