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Stoke Space has announced the first successful hot-fire engine test for its Nova launch vehicle, which the company calls the "most robust, fully and rapidly reusable medium-lift rocket in the world."
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Alaska's melting permafrost is dumping toxic metals into the state's rivers, turning them bright orange and making the water highly acidic. The contaminated rivers are so vibrant they can be seen from space, and the problem is likely to get much worse in the future.
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The two black holes at the heart of the galaxy OJ 287 are true behemoths with masses of 18.35 billion and 150 million times the mass of our Sun.
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With his trademark suit-and-tie an anomaly among the primary-colored "Star Trek: Discovery" uniforms of the 32nd century, Dr. Kovich always looked like a man out of time. But who is he, really?
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From understanding the weather to seeing the Milky Way, here's how to plan a trip to see the total solar eclipse on Aug. 2, 2027.
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The universe is undeniably vast, and from our perspective, it may seem like Earth is in the middle of everything. But is there a center of the cosmos, and if so, where is it? If the Big Bang started the universe, then where did it all come from, and where is it going?
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Astronomers are using the Chandra X-ray Observatory to study stars' radiation and establish the feasibility of exoplanet habitability.
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On Episode 115 of This Week In Space, Rod and Tariq talk with Alex Young of NASA's Goddard Space Flight Center about the sun and solar activity cycles.
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Cosmic rays from distant stars and galaxies and solar energetic particles from the Sun bombard the moon's surface, and exposure to these particles can pose a risk to human health.
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An examination of the iconic Griffith Observatory, which has appeared in scores of films throughout the history of Hollywood.
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Eventually, all galaxies, including our own Milky Way, will meet their end. But how do galaxies die? If you're in the mood to destroy an entire galaxy, you have several options, depending on your desired level of destructiveness.
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Saturn pumps into space varying amounts of heat based on its seasons, which drives planet-wide storms, data from NASA's Cassini mission has revealed.
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Neutron stars with surface temperatures millions of degrees cooler than expected rule out a swathe of possible models to describe the physics of such objects.
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Saturn's largest moon Titan has been known to have rivers and lakes of methane, but a new study has found that their shorelines may be eroded and shaped by wave activity.
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The Hubble Space Telescope snapped a striking shot of the fluffy spiral galaxy NGC 1546, showing it can still observe the heavens in its new one-gyroscope mode.
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