Dark matter is believe to be the solution to the missing mass problem. Dark matter is believed to take up most of the Unvirse. Dark matter was firsted propesed by a man named Frizt Zwicky in 1933. He was observing a cluster of galaxies when he notice he was moving faster around thier centre of gravity point, based on their mass. He worked out that the galaies had to be 400 times in their mass at the rate thatv they were moving, this is called the missing mass problem.

Many other scientist have proposed other solution to tis problem but they all have same characteristics.

The Asteroid Belt

The Asteroid Belt consists of asteroids and minor planets. It is located between Mars and Jupiter. Apparently, astronomers in the 1700's thought that the asteroids were planets. They named it Ceres until they realised that it was too small to be a planet so they called it an asteroid. It was stated an asteroid belt on 1st January, 1801. The Asteroid Belt is one of my favourite celestial objects!

Titan

Recently, in class we had to make a fact sheet. I did mine on Tian and here are some facts about it.

Titan is Saturn's largest moon and the second largest in the solar system. It was discovered by Christaan Huygens (and that isn't a spelling mistake) in 1655, whilst using a newly improved telescope to Galileo's original telescope. It has a dense atmosphere and is similar to Earth, i.e. it probably can produce life.

In 2005, the space probe, Huygens, landed on Titan in memory of Christaan Huygens.

The only liquid on there is frozen methane and in years to come we will probably live there (although the sun would have to get older to create enough heat for humans)

Here are a couple of pictures of Titan: