July 10, 2002
Every year, the Earth returns to the same point in its orbit where it was when you were born.
M51: Cosmic Whirlpool
Birthday · July 10, 2002
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APOD published July 10, 2002. Credit: Tony and Daphne Hallas. A publication-date match, not a photo taken on your date. Independent of NASA.
Follow the handle of the Big Dipper away from the dipper's bowl, until you get to the handle's last bright star. Then, just slide your telescope a little south and west and you'll likely find this stunning pair of interacting galaxies, the 51st entry in Charles Messier's famous catalog. Perhaps the original spiral nebula, the large galaxy with well defined spiral structure is also cataloged as NGC 5194. Its spiral arms and dust lanes clearly sweep in front of its companion galaxy (left), NGC 5195. The pair are about 37 million light-years distant and officially lie within the boundaries of the small constellation Canes Venatici. While M51 is visible as a faint, fuzzy patch in binoculars, this sharp color picture was made with a 14 inch telescope and combines digital camera exposures totaling 3 hours and 42 minutes.
Image credit: Tony and Daphne Hallas