It’s been 25 years since the Hubble Space Telescope was launched into orbit, drastically changing the way we see the universe. This week marks a worldwide celebration of the Hubble’s work and legacy.
So, what is the Hubble?
Named after Edwin Hubble, who came up with the theory of the “expanding universe,” it’s the world’s most powerful telescope, orbiting 343 miles above Earth’s surface and collecting 120 gigabytes of data each week.
The telescope uses mirrors to capture and reflect light into 6 on-board science instruments, including cameras and spectrographs, which break light into colors for analysis. Because the telescope orbits above our atmosphere, it can take clearer pictures. (On Earth, light wavelengths are obstructed by the air pockets in our atmosphere, giving us less clear pictures.) Here, you can see the same picture taken from the ground and from the Hubble.…