Dobsonians are reflecting telescopes constructed from cheap materials. They were invented by John Dobson, a populist proselytizer who championed the view that the worth of telescopes should be ...

The best solar telescopes give you close-up views of the sun without damaging your eyes, perfect for solar eclipse-watching or observing sun spots. When you purchase through links on our site ...

To mark the 35th anniversary of the Hubble Space Telescope, Space.com looks at some of the most scientifically significant images that have emerged from the observatory's lens.

Just how powerful is the world's most powerful telescope? Let's start with the human eye. The human eye has an angular resolution of about 1 arcminute. That's pretty impressive. Take a circle ...

During its 35 years of orbiting the Earth, the Hubble Space Telescope has transmitted endless streams of magnificent images, confirmed the existence of "dark matter," and helped track a vagabond ...

The most powerful solar telescope in the world has recorded a major milestone atop an active volcano in Hawaii, capturing a detailed image of a cluster of sunspots with the telescope's new Visible ...

Inouye Telescope has achieved first light, capturing a stunning image of a sunspot cluster in the process. The image—which barely scratches the surface of what the VTF will one day accomplish ...