American Museum of Natural History
- The Pluto controversy: What's a planet, anyway?
- How was our Solar System formed?
- Features of planets
- The search for life
- Curiosity: Searching for carbon
- Seeing planets like never before
- Solar System glossary
- Quiz: Planets
- Exploration Questions: Planets
- Answers to Exploration Questions: Planets
Solar System glossary
asteroids: small rocky or metallic bodies, most of which orbit the Sun between Mars and Jupiter
comets: made of ice and dust, these frozen pieces of leftover planets move in elliptical orbits around the Sun. As they approach it and begin to melt, comets may release glowing tails of dust and gas millions of miles long.
hydrostatic equilibrium: in a star, the balance acheived between the enormous outward pressure of gas heated by fusion and the inward pull of its own gravity.
mass: the amount of matter contained within a given object.
supernova: an explosion that occurs when a high mass star uses up its fuel and is unable to maintain hydrostatic equilibrium
Want to join the conversation?
- it said some worlds had water so is their atmosphere composed of water somehow or does the surface have water?(2 votes)
- Water is known to arrive in comets that plummet into planets. Therefore, if a world has water, as well as an atmosphere to make sure the water isn't heated and escapes back into space, then yes, there is water on the surface, usually the polar caps or in the shadows of mountainous regions.(1 vote)
- How much mass does earth have?(2 votes)
- who found out about hydrostatic equilibrium?(2 votes)
- how many planets in this universe are their?(1 vote)
- There was nine planets before which were Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. In 2006, researches state that Pluto is not a planet . Reason being
1. A planet has to orbit the Sun. Okay fine, Pluto does that.
2. A planet needs enough gravity to pull itself into a sphere. Okay, spherical. Pluto’s fine there too.
3. A planet needs to have cleared out its orbit of other objects. Uh oh, Pluto hasn’t done that.
Meaning there is currently eight planets
for more about this here are some links that i thought are very useful
you can also youtube about it(2 votes)
- what would happen if a comet hit kelp-er 180(1 vote)