The plane of the Moon’s orbit around the Earth is at an angle with respect to the plane of the Earth’s orbit around the…

A sundial is basically a simple clock, where a stick is fixed on a flat surface. The surface is marked such that the s…

The ozone layer essentially allows life to exist, by screens all living beings on Earth from the harmful ultraviolet (…

The ozone layer is a portion of the earth’s atmosphere that contains high levels of ozone. The atmosphere is divided i…

Astronauts go on spacewalks for many reasons, whether to repair satellites or spacecraft in space. By going on spacew…

Most of the constellations we know have etymological connections to Middle Eastern, Greek and Roman cultures. They ide…

A spacesuit is a pressurized (filled with air pressure) garment worn by astronauts during spaceflights. It is designed…

Any gas introduced into a vacuum will be at a higher pressure than that vacuum. Gas expands until its outward pressure …

A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of …

We measure the temperature of far-away objects by investigating the radiation (mostly light) they emit, and we can do t…

In the Olympics, a high jumper cleared a height of about 2 Meters. If the same person were to compete in the Olympics h…

The Sun’s energy comes from nuclear reactions that is the conversion of hydrogen to helium by the fusion reaction.  Th…

All planets are round because of gravity. When our solar system was forming, gravity gathered billions of pieces of gas…