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...

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...

Polaris the North Star

The North Star (Polaris) The North Star, also called Polaris, is of famous for the fact that it indicates the north. The best way to find...

The Star Vega (alpha Lyrae)

Information About Star Vega The Star Vega; named after Arcturus, is the second brightest star in the northern sky. Around midnight it can be seen with...

M7 – The Ptolemy Cluster

What is Ptolemy Cluster Just southwest of its predecessor M6 we find the very conspicuous open cluster M7. This cluster is easily seen by the naked...

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...
neutron star

What is a neutron star?

Neutron Star Definition A neutron star is an incredibly compact star, which is only 10-30 km. in diameter, but weighs 1.4 - 2.3 times as much...