In reality, Sirius is a fraction of the brightness of Betelgeuse or Rigel, but it’s much closer and so appears to us to be much brighter. Look at the stars, even casually, and you’ll notice many of them twinkle. The closer they are to the horizon the greater the effect. Twinkling ...
How long does a star live for? Generally, the more massive the star, the faster it burns up its fuel supply, and the shorter its life. The most massive stars can burn out and explode in a supernova after only a few million years of fusion. A star with a mass like the Sun, on ...
Siriusis the brightest star in the night sky and visible in daylight under the right conditions. In late February, the waning Moon passed just north of Jupiter, making for a great opportunity to find the planet in the daytime sky.
Why does the moon appear red-orange just before a lunar eclipse begins? Why doesn't Earth experience a solar eclipse every month? Explain what happens during a lunar eclipse. Why do we not see a lunar eclipse during each full moon when the earth is in ...