Hubble

One of the biggest cosmological mysteries centers on a discrepancy in how fast the universe is expanding. A new study comes to an intriguing solution by applying a modified theory of gravity and an unsettling “supervoid” that our galaxy resides in.

The chances of finding extraterrestrial life have improved slightly after NASA announced that its Hubble Space Telescope has confirmed the size of an Earth-sized exoplanet only 22 light-years from Earth, the nearest that passes in front of its star.

The James Webb Space Telescope may have been touted a successor to Hubble, but the old-timer still has some life left in it. These two iconic instruments have now teamed up to take a deep-field image of the colorful “Christmas Tree galaxy cluster.”

NASA’s anticipated Roman Space Telescope is taking shape, and will soon measure light from a billion galaxies, perform a microlensing survey deep in the Milky Way, monitor hundreds of millions of stars and peer into unseen galactic neighborhoods.

It feels like every time astronomers get a handle on a cosmic phenomenon, a new one pops up that sends them back to the drawing board. Case in point – Hubble has spotted a burst of light in a region of space where there didn’t seem to be a trigger.

Black holes come in two distinct types – small and supermassive. A group in the middle has long been hypothesized to exist, and now Hubble has found some strong evidence for one of these intermediate-mass black holes in a nearby star cluster.

Astronomers have spotted a bizarre sight unlike anything ever seen before. A supermassive black hole has been ejected from its host galaxy, leaving a streak of light about twice as wide as the Milky Way in its wake as the shockwaves create new stars.

Saturn is renowned for its rings, easily visible through an ordinary telescope. Now, using observations collected over 40 years, scientists have discovered a never-before-seen interaction between the planet and its iconic rings.

In September, NASA deliberately crashed a spacecraft into an asteroid to test a potential planetary defense technique. To mark the publication of four scientific papers, NASA has released a video of the impact captured by the Hubble Space Telescope.

The James Webb Space Telescope is probing greater depths of space and time than other observatories. Now it's discovered galaxies with a structure like our own Milky Way 11 billion light-years away, challenging our understanding of galaxy formation.

Astronomers have detected an eerie glow of “ghost light” that could represent a previously unknown component of the solar system. Comparing data from two distinct viewpoints – Hubble and New Horizons – researchers discovered a dim, unexplained glow.

Astronomers have been keenly watching the asteroid Didymos since the historic DART mission successfully crashed a spacecraft into it last month. And now, Hubble has detected something unexpected – the asteroid has sprouted two tails.