Reference The dominating form of energy in the cosmos dark energy is driving the accelerating expansion of the universe, but its nature remains a mystery.
Jay Pasachoff perhaps witnessed more solar eclipses than anyone else. But his greatest contribution to science may have been his public outreach and inspiration of future generations of scientists.
The Perseverance rover is approaching its one-year anniversary since landing on Feb. 18, 2021 — one Mars year, that is.
Observations with NASA's Imaging X-ray Polarimetry Explorer spacecraft have shed light on how particles are accelerated to nearly the speed of light in a blazar's jet.
The newly-discovered planet is coated in molten magma, has a "year" that lasts half a day, and boasts gravity three times stronger than Earth's.
An uneven distribution of stars in several nearby clusters may offer evidence of MOND — a controversial theory of gravity that disputes Newton and rejects the existence of dark matter.
A flyby of Jupiter by NASA's Juno spacecraft has delivered a stunning image of the gas giant's cloud tops and moons Callisto and Io.
NASA's tiny CAPSTONE spacecraft has settled into its final lunar orbit, shifting into the operational phase of its pioneering moon mission.
The James Webb Space Telescope has revealed an exoplanet's atmosphere in unprecedented detail, allowing scientists to understand the planet's past and test methods for detecting alien life.
Isotopic evidence points to carbonaceous chondrite asteroids bringing enough water to Mars that it could have formed a global ocean some 1,000 feet deep.
New radio telescope images show the galactic cluster Abell 2255 in unprecedented detail and hint at the physical processes occurring in this region of space 1 billion light-years away.
Continuing its mission to search for signs of ancient life on Mars, NASA's Perseverance rover has reached Jezero Crater's Yori Pass.
Reference Lunar eclipses occur when Earth blocks the sun and casts a shadow over the surface of the moon. We explore the different types of lunar eclipses here.
Reference Solar eclipses are one of nature's most spectacular events. Here we explore what they are and the different types of solar eclipses.
A small space rock was discovered on Saturday (Nov. 19) just a few hours before hitting Earth's atmosphere and landing in Canada's Lake Ontario.
Though hot and suffocating today, Venus may have once been a temperate world before massive volcanism changed it forever.
The first data release from WALLABY reveals a 3D map of hundreds of galaxies, hinting at impressive observations to come.
The Hubble Space Telescope has been taking an extended look at a spiral galaxy to help solve one of the biggest mysteries in astronomy.
A vent deep under the Arctic ice is surprisingly similar to what may occur on Saturn's icy moon, Enceladus.