Do You Have a “Birthday Star”?

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DO YOU HAVE A “BIRTHDAY STAR”? When you look into space, you look back in time. You see stars and other objects in space as they looked when the light left them. For example, the Sun is 8 light-minutes (93 million miles) away from Earth, which means the Sun’s light takes 8 minutes to reach Earth and we always see the Sun as it looked 8 minutes ago. Depending on your current age, you might have a “birthday star”—a star whose light left it around the time you were born. The starlight you see is as old as you are. IF YOU ARE... YOUR BIRTHDAY STAR IS... WHICH IS LOCATED... 8 minutes old the Sun in the daytime sky 4 years old Alpha Centauri in the constellation Centaurus the Centaur (not visible from North Carolina) 6 years old Barnard’s Star in the constellation Ophiuchus the Serpent Bearer (not visible to the naked eye) 8 years old Wolf 359 in the constellation Leo the Lion (not visible to the naked eye) 9 years old Sirius in the constellation Canis Major the Big Dog (brightest star in the night sky) 10 years old Epsilon Eridani in the constellation Eridanus the River 11 years old Procyon in the constellation Canis Minor the Little Dog 12 years old Tau Ceti in the constellation Cetus the Sea Monster 17 years old Altair part of the Summer Triangle 25 years old Vega part of the Summer Triangle 34 years old Pollux in the constellation Gemini the Twins 37 years old Arcturus in the constellation Boötes the Herdsman 43 years old Capella brightest star in the constellation Auriga 51 years old Castor in the constellation Gemini the Twins 65 years old Aldebaran eye of Taurus the Bull 79 years old Regulus brightest star in Leo the Lion Not all possible birthday stars are listed. Find a more complete list at: http://www.pbs.org/seeinginthedark/explore-the-sky/birthday-stars.html.

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