Miguel Claro captured the Orion Constellation glowing red due to hydrogen gas, as seen from the Dark Sky Alqueva Reserve in Portugal.
A new solar observing telescope on the exterior of the International Space Station is open for business. NASA recently released images from the newly commissioned Coronal Diagnostic Experiment (CODEX) mounted on the station.
Mercury is definitely the troublemaker of our Solar System. The smallest planet orbiting our Sun is also one of the most perplexing, with characteristics so unusual that scientists are still scratching their heads about how it came to be. But new laboratory experiments are finally starting to unravel Mercury's mysteries and what they're revealing could reshape our understanding of rocky planets everywhere.
A first stage in understanding a natural phenomenon is to divide it into steps and give things labels. That gives us a way to talk about the phenomenon. But in nature, there are seldom clear divisions between processes. The entire Universe is a long-running series of intertwined causes and effects set in motion by the Big Bang.
Astronomers have found a new way of accurately mapping the outer gas disk of the Milky Way using the positions of young stars. In the process, they've also discovered that our galaxy's structure is more complex than everyone thought, complete with tufty-looking "flocculent" gas clouds.
Japanese company ispace lost its Resilience lunar lander this month due to laser range finder errors, the company said.
Astronomers have discovered the strange dance that leads to the creation of rare "double hot Jupiters" in binary star systems that are "just right."
On June 26, you'll have an opportunity to behold the sight of a slender waxing crescent moon positioned just to the right of Mercury.
The world's largest digital camera focuses on the Virgo Cluster, showing never-before-seen detail in our universe
Saturn is home to one of the most fascinating and diverse collections of moons in our solar system. Here's an overview of its most notable moons and key facts:
Short on time and looking to get ready for Metroid Prime 4 later this year? We've ranked all the Metroid games so you can focus on the must-plays.
Imagine a star so dense that a teaspoon of its material would weigh as much as Mount Everest, spinning hundreds of times per second while beaming radio waves across the universe. These are pulsars, the collapsed cores of massive stars. Some pulsars are breaking the rules of physics as we understand them, and the answer might lie in something as simple as tiny mountains on their surfaces.
Auroras may be visible from Alaska to South Dakota as a giant hole in the sun's atmosphere shakes up geomagnetic activity in the coming days.
Simulations of asteroids near Venus reveal gaps in our ability to detect them.
Iceland is one of the most active volcanic regions in the world, but its seismic nature is part of a much broader geological history.
A radio signal from the dawn of time could help scientists weigh the first stars and reveal how they lifted the cosmic darkness.
A team of scientists is proposing a bold alternative to the Big Bang theory, suggesting that our universe may have instead formed inside a colossal black hole.
NASA has announced a new launch date for the private Axiom astronaut launch to the ISS, following delays due to leaks aboard the space station.
When a young star forms, a ring of gas and dust called a protoplanetary disk forms around it. Together, the star and the disk are a young solar system, and peering into solar systems much younger than ours reveals clues about how planets form in protoplanetary disks. Our most powerful tool for examining these young systems is ALMA, the Atacama Large Millimeter/submillimeter Array.
In June 2020, the ESA's Solar Orbiter (SolO) mission launched and became the closest mission ever to orbit the Sun and take images of its surface. In March 2025, the mission made history by becoming the first probe to acquire images of the Sun's polar regions. Until now, all missions have taken images of the Sun's equatorial region because it corresponded to their orbits around the ecliptic plane. But thanks to the Solar Orbiter spacecraft's tilted orbit, it was able to observe the Sun from a whole new perspective.
SpaceX launched 70 different payloads — including a special memorial capsule carrying cremated remains and DNA samples — today (June 23) on the Transporter 14 rideshare mission.
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