Science Central is offering an out-of-this-world exhibit for a limited time. The Hubble and Webb Telescope exhibit introduces ...

This object was studied by Hubble's Wide Field and Planetary Camera 2 (WFPC2) and Wide Field Camera 3 (WFC3) as part of a survey of strong lenses. A version of this image was entered into the ...

Hubble's initial value was on the order of 500 (km/s)/Mpc. By the 1960s, the value settled down to between 50 and 90 (km/s)/Mpc, where it stayed for most of the 20th century.