When astronomers initially stumbled upon these rapidly pulsing beacons in 1967, they thought they had found ET. The truth was almost as shocking.
Mount Wilson’s famous telescope celebrates a century
The 100-inch Hooker Telescope, which allowed Hubble to define the size of the universe was nearly its builder’s undoing.
Solar eclipse geometry
What’s happening in space and on Earth.
These clouds of gas, in the process of gravitationally collapsing into new stars, offer spectacular sights for owners of medium and large telescopes.
Solar eclipses have been omens of good or evil, but a few of them have actually changed lives.
Do you have a camera? A tripod? Then head outdoors, because you’re ready to image!
The opticians of yesteryear combined science and art to pave the way for today’s masterpieces.
Whether you’re observing planets or galaxies, this set will make your current equipment setup better.
Sky this Month
StarDome and Path of the Planets
In Every Issue