Is outer space a perfect vacuum?

Outer space (also called just space) is all the space in the universe beyond Earth and its atmosphere. It can be simple stated that...

Why is the sky blue in the day and black at night?

During the day (daylight) the sky has a blue appearance because the Sun’s light (white light) is made up of rainbow of colors (red,...

Messier 6, M-6 Butterfly Cluster

M6 Constellation - Butterfly Cluster  The next two objects in the catalog of Messier are not globular clusters, but open clusters. Open star clusters are generally...

How is a star born?

Birth of a star The universe is a wondrous place where many processes, that defy all imagination,occur. One of these magical phenomena is the birth...

Why do stars look like small crosses on photographs?

Stars should look like little dots on a star photograph, but often appear as a small luminous cross with four brilliant arms perpendicular to...

Kuiper Belt Definition and Facts

We will explain in this article How the Kuiper belt has been discovered,who discovered the Kuiper Belt and all relevant detailed information about it. Thanks to...

Lunar Eclipse

In a lunar eclipse, the sun, the earth, and the moon all play a role. Lunar eclipse happens when the Earth passes between the...
earth facts

Facts About Earth

Interesting facts about earth Bowling ball: The earth has a more smooth surface than a bowling ball. (if you scale it to the same size) ...

M5 – Globular cluster

M5 - Globular cluster in the Snake Globular cluster M5 is the last in this series of globular clusters at the beginning of Messier's list is...

Oort Cloud Facts

The Oort cloud around our solar system Recent astronomical discoveries reveal a fascinating structure within our solar system. It consists of three zones. (Four if you...