Sure, the brightest star in the sky (next to the Sun, of course) is Sirius. At 8.6 light years distant, Sirius can even be seen against the deep blue sky while the Sun is still above the horizon if you known exactly where to look for it. In fact, spotting Sirius was so important ...
Sure, the brightest star in the sky (next to the Sun, of course) is Sirius. At 8.6 light years distant, Sirius can even be seen against the deep blue sky while the Sun is still above the horizon if you known exactly where to look for it. In fact, spotting Sirius was so important ...
Sure, the brightest star in the sky (next to the Sun, of course) is Sirius. At 8.6 light years distant, Sirius can even be seen against the deep blue sky while the Sun is still above the horizon if you knownexactlywhere to look for it. In fact, spotting Sirius was so important to...
A very large telescope may allow you to see Sirius B, a faint white dwarf companion star located just 10 arc-seconds to the east of Sirius. Saturday, Dec. 28 - Earthshine Moon with Antares and Mercury (before sunrise) If the weather forecast calls for clear skies to the southeast on ...
Another way to deduce a star's luminosity is to measure its apparent brightness (how it appears to the eye) and compare that to its distance. Stars that are farther away appear dimmer than those closer to us, for example. However, an object might also be dim-looking because the light is...
Dark matter accounts for 23.3 percent of the cosmos, and dark energy fills in 72.1 percent [source: NASA]. Together, these materials make up a whopping 95.4 percent of the universe, so it's no wonder we're still trying to figure out exactly what dark energy is. Contents The Cosmic ...
There is so much to see in the night sky tonight, here's what you can look forward to. A good telescope or pair of binoculars will help you see some of the night sky’s fainter objects. However, the unaided eye is enough to learn its stars and constellations, watch the moon, experie...
3. Double stars vary a lot in their colors, relative sizes, and spacing, so it's fun to sample the differences. Some pairs are very pretty. and last, some very close doubles are hard to split except under great seeing conditions, so it's a hunt. The Sirius pup is the prime example...
A parsec is the distance at which the diameter of the Earth's orbit, (not of the Earth itself as Hank mistakenly writes) subtends an angle of 1 arc second. ByHank— On Mar 24, 2009 When I was a freshman, we were required in physics to determine the value of a parsec. The defini...