How much did you know about the Sun?

• The Sun is a star found at the center of the Solar System.
• The Sun is over 300000 times larger than earth
• It makes up around 99.86% of the Solar System’s mass.
• At around 1,392,000 kilometres (865,000 miles) wide, the Sun’s diameter is about 110 times wider than Earth’s.
• Around 74% of the Sun’s mass is made up of hydrogen. Helium makes up around 24% while heavier elements such as oxygen, carbon, iron and neon make up the remaining percentage.
• Light from the Sun reaches Earth in around 8 minutes 20 seconds.
• The Sun’s surface temperature is around 5500 degrees Celsius (9941 degrees Fahrenheit), so pack plenty of sunscreen if you plan on visiting (remembering that the average distance from the Sun to the Earth is around 150 million kilometers).
• The Sun’s core is around 13600000 degrees Celsius!
• The Sun generates huge amounts of energy by combining hydrogen nuclei into helium. This process is called nuclear fusion.
• Because of the Sun’s huge influence on Earth, many early cultures saw the Sun as a deity or god. For example, Ancient Egyptians had a sun god called Ra while in Aztec mythology there is a sun god named Tonatiuh.
• The Sun produces a solar wind which contains charged particles such as electrons and protons. They escape the Sun’s intense gravity because of their high kinetic energy and the high temperature of the Sun’s corona (a type of plasma atmosphere that extends into space).
• Planets with strong magnetic fields such as Earth manage to deflect most of these charged particles as they approach.
• A solar eclipse occurs when the Moon is between the Sun and the Earth.

Computer Programming

Computers are programmed to carry out instructions. These instructions are usually very simple and require adding numbers together, moving data from one place to another etc.

Early electronic computers

Early electronic computers, developed around the 1940’s, were the size of a large room and consumed huge amounts of electricity. They were vastly different to the modern computers we use today, especially when compared to small and portable laptop computers.

Rotation of the owl's head

Did you know an amazing fact of science in just a simple creature, the owl? If you could study about this wonderful creature, then you'd know that you can't rotate the owl's head. No matter how you rotate its body, but its head would remain in the same position. Try it out if you are really interested to experimental science. There's even a song which shows the rotation of the owl's head, the song is 'Rotate your owl'.

Aliens

Did you know there are aliens? I think because of one fact, the universe is big, really big. There are aliens in really exotic forms, and perhaps there are intelligent creatures out there too. It is explained in a documentary of Stephen Hawking made by Discovery Channel – Into the Universe with Stephen Hawking: Aliens.

Evolution of the Model of the Atom

Periodic Table of Elements