Hubble
How Webb Stays in Focus
JWST's primary mirror consists of 18 individual segments, each of which can be moved on 6 different axes of freedom.…
Only Hubble Could Make this Measurement of a Supernova
Calculating the distance to far-away objects, such as galaxy clusters and quasars, is difficult. But it is also critical to…
Hubble's Back, but Only Using One Gyro
The Hubble Space Telescope has experienced ongoing problems with one of its three remaining gyroscopes, so NASA has decided to…
Hubble Has Accidentally Discovered Over a Thousand Asteroids
The venerable Hubble Space Telescope is like a gift that keeps on giving. Not only is it still making astronomical…
If Europa has Geysers, They’re Very Faint
In 2013, the Hubble Space Telescope spotted water vapour on Jupiter's moon Europa. The vapour was evidence of plumes similar…
It’s Time for Saturn’s “Spokes” to Return
Astronomers have been observing Saturn with the Hubble Space Telescope and several other spacecraft for decades and have noticed something…
Compare Images of a Galaxy Seen by Both Hubble and JWST
The James Webb Space Telescope is widely considered to be better than the Hubble Space Telescope. But the JWST doesn't…
M87's Jet is Triggering Novae
Everyone loves a good mystery, and astronomers have just uncovered a new one in a nearby supermassive galaxy called M87.…
A Collection of New Images Reveal X-Rays Across the Universe
One of the miracles of modern astronomy is the ability to ‘see’ wavelengths of light that human eyes can’t. Last…
A Black Hole Switched On in the Blink of an Eye
A new study describes how astronomers discovered a supermassive black hole that suddenly "switched on" and became