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What’s the sun made of? – Astronomy – Science

By |2018-04-24T14:46:25-07:00August 19th, 2017|Physics|

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 ago, just a little bit before the planets formed around it. It's not one of the older stars in the Universe. Probably some of [...]

Venus project – the Morning Star

By |2018-05-31T11:49:17-07:00August 18th, 2017|Physics|

Sunset with Venus visible in the sky near the moon You can see the planet Venus for yourself, without a telescope. Venus is so bright that it's even brighter than most of the stars in the sky. Just look near the horizon just before the sun comes up or just after the sun sets. In this picture, Venus [...]

What is a Comet? – Astronomy – Space

By |2019-04-18T05:32:51-07:00August 17th, 2017|Physics|

A comet in the night sky What are comets made of? Comets are balls of leftover rock and ice in space. They started out when a star exploded into a supernova. What is a supernova? More about ice All our space articles When were the first comets? A nebula formed, and then most of the material in our nebula merged together, about [...]

Brown dwarf stars – Space science

By |2019-02-24T19:58:01-07:00August 17th, 2017|Physics|

What a brown dwarf might look like up close What is a brown dwarf star? The very beginning of a star forming is a brown dwarf: a star that hasn't gotten enough mass together yet to begin nuclear fusion. More about nuclear fusion Different types of stars What are stars made of? All our physics articles [...]