What’s the sun made of? – Astronomy – Science
The sun from space The Sun is a star, just like billions of other stars in the universe. Our Sun probably formed a little more than four and a half billion years [...]
The sun from space The Sun is a star, just like billions of other stars in the universe. Our Sun probably formed a little more than four and a half billion years [...]
What are stars made of? This is just one of the stars: the sun from space The first stars The earliest stars probably formed only a few hundred thousand years [...]
Main sequence stars: A starry sky with the Milky Way galaxy (thanks to Bernd Nies) What is a main sequence star? Nine out of ten stars that you see in the sky [...]
The galaxy M 100, seen through the Hubble telescope What is a galaxy? A galaxy is a group of millions of stars that are relatively near each other. Most stars seem to [...]
A starry sky with the Milky Way galaxy (thanks to Bernd Nies) - there are probably black holes in there somewhere! What is a black hole? A black hole is [...]
Gottfried Leibniz, a German mathematician - Enlightenment science What set off the Enlightenment? By 1650 AD, Europeans understood Islamic algebra and trigonometry better. Then they combined that with the exciting invention of the telescope and microscope (thanks to [...]
Medieval Islamic science: Al Tusi's diagram of linear motion from circular motion Indian and African science In the Early Middle Ages, before the formation of the Islamic Empire, Buddhists ran the world's biggest [...]