Glossary

Here are the Wiki links to some terms in the posts :-

-Solar System                                             
-Jupiter
-Saturn
-Milky Way
-Chandra X-ray Observatory
-ESA XMM Newton
-NASA's Solar Dynamics Observatory
-NASA
-MAVEN
-Light Pollution/Photopollution/Luminous Pollution
-Aldebaran
-Mercury Transit
-Opposition
-LIGO
-Venus Transit
-Dark Matter
-Dark Matter
-Gravity
-Transit
-Mercury Transit