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The Largest Telescopes in the World

FAST in China has a 500 m dish. The GTC has a 10.4 m optical mirror. The ELT will have a 39.3 m mirror when complete. JWST has a 6.5 m mirro...

A History of Space Telescopes

Hubble has observed for 34 years. JWST peers 13.5 billion years into the past. Chandra sees the universe in X-rays. Planck mapped the cosmic...

How We Detect Ripples in Spacetime

LIGO uses 4 km laser arms to detect gravitational waves. Virgo adds a third detector in Italy. KAGRA operates underground in Japan. IceCube ...

The Best Places on Earth to Build a Telescope

Mauna Kea at 4,205 m above 40% of the atmosphere. The Atacama Desert is the driest place on Earth. Antarctica offers months of continuous da...

Particle Accelerators That Probe the Universe

The LHC at 27 km circumference collides protons at nearly light speed. It discovered the Higgs boson in 2012. RHIC recreates conditions from...