Speed of Light The Speed of Light is around 186,000 miles/sec (299,792 km/sec), or around 671 million miles/hour (1.07 billion km/hour), meaning light travels a distance of about 5.88 trillion miles (9.5 trillion km) over […]
So you are reading a post or article about a celestial object, and you notice that the distance to the object stated in the post or article is different from the same value stated for […]
If you were look up at the position of the stars on any particular day of the year from the same location on Earth, and compared them to the same day a year earlier, you […]
The night sky is filled with stars of different colors that astronomers rank in order of their luminosity, the brightest of which is Sirius in Canis Major, a blue-white star 8.611 light years distant with […]
Introduction In ancient Greece during the 7th century BC, scientists like Thales of Miletus (624-546 BC) started to realize that the Sun was not the deity Helios (Apollo) driving his chariot around the Earth, but […]
In astronomy, the magnitude of a star refers to its measure of brightness, and while absolute magnitude relates to the star’s intrinsic brightness, apparent magnitude, on the other hand, is a way of measuring how […]
Twinkle, twinkle little star…I think I know what you are! However, there remains much to be learned about stars, and how they live and die, but until such time that we know it all, here […]
1) Classified As A Yellow Dwarf The Sun is classified as a G-type yellow dwarf (G2V), which is a little misleading as stars in this sequence can vary in color from yellow for cooler stars, […]
With the naked eye, the stars may all appear to be similar, and nothing more than pinholes in the sky, but the reality is that the stars come in a wide, almost stupefying range of […]
So, when you look up at the stars it’s a nice, steady backdrop. An airplane might pass by, or you might be treated to an occasional meteor blazing its way across the sky, but it’s […]
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