Telescope mirror coatings (e.g., silver, gold, aluminum) determine which wavelengths of light are reflected. X-ray telescopes use specially shaped mirrors to reflect X-rays, which are normally ...

The Eagle Nebula is located about 5,700 light-years from Earth in the summertime constellation Serpens. The dark, finger-like clouds in its core, also known as the Pillars of Creation and made famous ...

While the motorized mount can initially be tricky to set up for beginners, it comes at a reasonable price for a decent night sky view. A compact Maksutov-Cassegrain catadioptric design, the Celestron ...