Search results for Planetary Systems

Planetary Sciences Jun 30, 2026

Sound waves reconstruct Alaska fireball path after cameras miss key details

When a bright fireball streaked across the Alaska sky last spring, the usual tools scientists rely on to track such events—cameras and satellites—did not provide a detailed picture. But the meteoroid left behind something ...

Astrobiology Jun 30, 2026

Nearby 'Super Earth' may be a better candidate for life than previously thought

Using the Hobby-Eberly Telescope at McDonald Observatory, astronomers have taken a closer look at a nearby exoplanet and discovered it may be more Earth-like than previously thought. The planet, known as GJ 3378b, orbits ...

Astrobiology Jun 29, 2026

The rise of space AI might explain the Fermi paradox

Artificial intelligence (AI) is continuing to have a disruptive impact on ever more parts of humanity. But what does it mean in the long run? A new paper, available as a preprint on arXiv from Austrian researcher Sergey Ivliev, ...

Planetary Sciences Jun 29, 2026

Testing the orbital mechanics of giant mirrors

Giant mirrors in space have been a staple of science fiction for decades. But so far, there's been very little work looking at the actual physics behind the concept—possibly because we're still so far from making them ourselves. ...

Astronomy Jun 29, 2026

New Horizons tracks solar wind slowdown as interstellar atoms add drag

A new Southwest Research Institute (SwRI) study based on data from NASA's New Horizons spacecraft has uncovered insights into why the solar wind gradually slows as it moves toward the edge of the solar system and the boundary ...

Earth Sciences Jun 29, 2026

Ozone depletion began decades before discovery of ozone hole, scientists find

The Antarctic ozone hole was discovered in 1985, when scientists observed a severe depletion in Earth's protective layer of stratospheric ozone. Industrial chemicals known as chlorofluorocarbons (CFCs), then widely used as ...

Space Exploration Jun 29, 2026

Europa's ice shell secrets unlocked by ground radar study

Jupiter's moon Europa has become high-value real estate for astrobiologists and the search for life beyond Earth. This is because the small moon, which is slightly smaller than Earth's moon, boasts a massive subsurface ocean ...

Planetary Sciences Jun 29, 2026

Giant exoplanet may hold a magnetic grip on its host star

Within their planetary systems, stars are continuously shaping their orbiting planets through gravity, radiation and magnetic forces. So far, this relationship has appeared to be a one-way street.

Astronomy Jun 28, 2026

12 billion years old, this interstellar comet is older than our solar system

One year ago, on July 1, 2025, astronomers discovered a fascinating new object moving through the solar system. Detected by the Asteroid Terrestrial-impact Last Alert System (ATLAS), the object was quickly recognized as something ...

Planetary Sciences Jun 26, 2026

Uranus, Neptune may be magma worlds, not ice giants

Uranus and Neptune remain two of the most mysterious objects in the solar system, primarily because they have been visited only by NASA's Voyager 2 spacecraft in 1986 and 1989, respectively. Their "ice giant" moniker comes ...

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