On the night of Oct. 5 to 6, 1923, Edwin Hubble discovered a new star — and revealed the utter vastness of the universe. Hubble was looking at the cosmos with the 100-inch Hooker telescope at the ...

In October 1923, Edwin Hubble utilized the 100-inch Hooker telescope to photograph the Andromeda Nebula, identifying a variable star within it. Hubble applied the known period-luminosity relationship ...

The two keys to Edwin Hubble's breakthrough discovery were forged by others in the 1910s. The first key, the period-luminosity scale discovered by Henrietta Leavitt, allowed astronomers to calculate ...

When you think of Hubble, the iconic Hubble Space Telescope likely comes to mind—a groundbreaking instrument that has revolutionised our understanding of the cosmos since its launch in 1990. Named ...

Before Edwin Hubble, there was Henrietta Leavitt, whose work made other astronomers’ discoveries possible. Her way of looking is a testament to the power of attention in science, art, and life.

The Hubble Space Telescope is a masterwork of engineering and human ingenuity. Hubble is comparable in size and weight to a large school bus, but its contributions to science and astronomy could fill ...