Astrophysics

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.

Next month, NASA will place a new piece of equipment on the International Space Station. It will examine a phenomenon known as Earth's airglow for signs of weather-produced waves that can reach the mesopause and disrupt satellite communications.

Our solar system officially houses eight planets, but some scientists say there could be a ninth hiding on the fringes. Now, a new study has found the oddities could be explained by modified theories of gravity, an alternative idea to dark matter.

The James Webb Space Telescope can look farther back in space and time than ever before – and it’s revealed puzzling galaxies that seem to be too advanced for their age. Now astronomers have proposed a new explanation for them – starburst galaxies.

The cosmos is full of surprises. Now astronomers have discovered a “heartbreak” star system where tidal waves, three times taller than the Sun, rise and crash on the surface of a giant star thanks to the motions of a smaller companion star.

NASA's James Webb Space Telescope has scored another first, detecting evidence of water in a planet-forming disc circling another star where at least two terrestrial-class proto-planets seem to be forming.

The very fabric of spacetime is constantly warping on unimaginably tiny scales, as ripples from past cataclysms wash over us. Astrophysicists have now detected a background sea of gravitational waves, using a galaxy-scale detector of dead stars.

Gravity is the only fundamental force that can’t currently be explained by quantum physics. Now scientists have outlined a plan to look for signs of quantum gravity out in the cosmos by listening in to the 'ringing' of colliding black holes.

NASA has confirmed that our solar system was struck by a gamma-ray burst originating 1.9 billion light-years away that was brighter than any since the beginning of human civilization in a "1 in 10,000 year" event that blinded space satellite sensors.

Is the evolution of our nearest planetary neighbor into a nightmarish hellscape typical? If it is, should Earthlings be worried? To find out, astronomers have proposed using the James Webb Space Telescope to look at five exoplanets in the Venus Zone.

Millions of planets have sides permanently bathed in the light of their star, and sides always cloaked in darkness. Between these two sides lies the "terminator zone," a logical place to search for extraterrestrial life, says a new study.

If you could zoom way out to look at the universe at its largest scale, you’d see that it’s made up of a colossal cosmic web. Now, astronomers have detected shockwaves moving through this web, providing new insights into large-scale magnetic fields.