Search results for Planetary Systems

Planetary Sciences May 28, 2025

Will Europa become a habitable world when the sun becomes a red giant?

People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the expanding sun will turn the inner planets into cinders. It will almost certainly spell the end of life ...

Astronomy May 27, 2025

New study suggests how wide-orbit planets form, supporting existence of Planet Nine

In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and planetary masses silently orbit their stars—sometimes thousands of astronomical units (AU) away. For years, ...

Ecology May 22, 2025

Reciprocity between humans and nature: Key to safeguarding planetary health

Practicing reciprocity between humans and nature—namely caring relationships between people and nature when they perceive benefits from nature—can contribute positively to both the planet and societies. This is the main conclusion ...

Planetary Sciences May 22, 2025

3D visualizations reveal that molten sulfide could percolate through solid rock to form a planetary core

A new NASA study reveals a surprising way planetary cores may have formed—one that could reshape how scientists understand the early evolution of rocky planets like Mars.

Astronomy May 22, 2025

Odd binary star system has a huge planetary companion

A small international team of astronomers has confirmed that a binary star system with an odd signal has a companion—a planet roughly twice the size of Jupiter, which may have emerged from a circumbinary orbit or from a second-generation ...

Planetary Sciences May 16, 2025

TESS has found exoplanets. Can it find rings around them?

Exoplanets—planets that orbit stars beyond our solar system—have transformed our understanding of the universe. Since the first confirmed discovery in the 1990s, more than 5,000 have been identified, ranging from scorching ...

Astronomy May 14, 2025

Another first: Webb identifies frozen water in young star system

Is frozen water scattered in systems around other stars? Astronomers have long expected it is, partially based on previous detections of its gaseous form, water vapor, and its presence in our own solar system.

Astronomy May 14, 2025

Astronomers take a second look at twin star systems

Apples-to-apples comparisons in the distant universe are hard to come by. Whether the subject is dwarf galaxies, supermassive black holes, or "hot Jupiters," astronomers can spend months or years searching for comparable ...

Planetary Sciences May 7, 2025

Improving in-situ analysis of planetary regolith with OptiDrill

What new technologies or methods can be developed for more efficient in-situ planetary subsurface analyses? This is what a recent study presented at the 56th Lunar and Planetary Science Conference hopes to address as a team ...

Astronomy Apr 30, 2025

When a comet hits a tidally locked exo-Earth

Comets that have hit Earth have been a mixed bag. Early in Earth's history, during the solar system's chaotic beginning, they were likely the source of our planet's water, ultimately making up about 0.02% of the planet's ...

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