What is the largest amateur telescope ever built?

We found out which telescope holds the world record for being the biggest

New substance could reveal dark matter particles

The material, known as a scintillator, could reveal the presence of light dark matter particles

Mars was much more Earth-like in its past than previously thought, Curiosity finds

Chemicals found in Martian rocks by the rover suggest the Red Planet once had more oxygen in its atmosphere than it does now

Cassini releases stunning image of Saturnian moons

While Tethys and Janus are made of more or less the same materials, they are very different worlds

Space Exploration

What’s stopping us from building a tower that goes up to space?

Will we ever be able to build a space elevator?

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