Scientists estimate that the Earth was created approximately 4.54 billion years ago, which is less than 100 million years after the formation of the solar system. It is thought that the planet was created as a result of ... More » Science Astronomy Planets

While no one knows for certain how the Earth formed, scientists theorize that it formed over 4 million years ago after the sun went through its initial formation, gravity began to draw heavy particles together into a pla... More »

The specific type of rock that forms when magma cools at the Earth's surface is extrusive igneous rock. Igneous rock forms when magma cools, but where the magma cools determines the type of igneous rock that forms. Igneo... More »

Similar to the formation of other planets in the solar system, Jupiter was formed through the core accretion method. Jupiter likely formed after the sun took its place at the center of the early solar system. Jupiter was... More »

The distance between Earth and Uranus changes constantly, due to the solar system not being entirely concentric. However, the closest Earth and Uranus get is 1.6 billion miles, which is 2.6 billion kilometers. At furthes... More »

The main reason planets in the solar system can be seen from Earth is because they reflect light from the sun. The light reflected off of the five closest planets, Mercury, Venus, Mars, Jupiter and Saturn, can be seen fr... More »

Of the planets in the solar system, Neptune is the farthest away from Earth. Depending on where each planet is in its orbit, Neptune is between 2.7 and 2.9 billion miles away from Earth. More »