Stephan's Quintet, discovered in 1877 by French astronomer Edouard Stephan in the constellation Pegasus, exemplifies the enhanced detail observable through larger astronomical apertures. The group ...

Celestron introduces the Moon Mission 100mm Tabletop Dobsonian, a 4-inch f/4 reflector telescope that includes two eyepieces, a finder scope, and a Moon filter, weighing 5.3 pounds with an optical ...

Apollo mission lunar samples provided crucial data, initially intended to test existing Moon formation theories (capture, co-formation, fission), but ultimately leading to the development of the Giant ...

Collimation aligns a telescope's parts for the sharpest images. Most telescopes need collimation at some point; reflectors need it often. Tools like laser collimators or Chashires help align the ...

The universe began with an unimaginably hot, dense state. Inflation rapidly expanded the universe's size. Before inflation, the universe existed in a period called the GUT era where forces were ...

Karl Schwarzschild's 1916 solution to Einstein's field equations of general relativity predicted the existence of black holes, characterized by an event horizon where even light cannot escape. Cygnus ...

Islamic scholars significantly advanced astronomy between 800 and 1300 AD. They made precise astronomical calculations using advanced math. Their work included building observatories and inventing new ...

Vera Rubin's observations of galaxy rotation defied Newton's laws. This unexpected rotation provided the first direct evidence of dark matter. Dark matter makes up about 84% of the universe's matter.

The aurora borealis, or Northern Lights, is caused by solar wind particles colliding with Earth's atmosphere. Ancient Chinese texts describe a five-colored aurora event dating back to around 977 or ...

Use the Big Dipper to locate Polaris, the North Star. Orion's belt helps find other bright stars like Sirius. Follow the Big Dipper's handle to find Arcturus and Spica. The Summer Triangle is formed ...

The Moon is about one-fourth the size of Earth. It's primarily composed of rock and minerals, with a small iron core. The Moon's average distance from Earth is roughly 239,000 miles. Lunar phases are ...

Whether you’re looking for a new telescope, eyepiece, binoculars, or anything else you need to up your observing game, we’ve got you covered.