Imagine directing the highest resolution camera orbiting the Red Planet. That wish can now be a reality.
Coins made as far back as 400 b.c. may honor solar eclipses. The tradition continued for two millennia.
In 1868, an English astronomer pioneered a way to measure the motion of stars and other objects.
The most extensive list of deep-sky objects has an unusual history and offers prime-number gems for observers.
These high-resolution eyepieces, specifically designed for planetary observing, minimize optical aberrations.