Search results for Planetary Systems

Planetary Sciences Nov 16, 2024

A new way to detect daisy worlds

The daisy world model describes a hypothetical planet that self-regulates, maintaining a delicate balance involving its biogeochemical cycles, climate, and feedback loops that keep it habitable. It's associated with the Gaia ...

Astronomy Nov 12, 2024

Team proposes new solar composition ratios that could reconcile longstanding questions

A Southwest Research Institute-led team combined compositional data of primitive bodies like Kuiper Belt objects, asteroids and comets with new solar data sets to develop a revised solar composition that potentially reconciles ...

Environment Nov 8, 2024

Planetary Boundaries framework gains traction in sustainability science

The Planetary Boundaries (PB) framework is a pivotal tool for tackling the climate crisis and safeguarding humanity's future on Earth. For the first time, the full story of the Planetary Boundaries is now being told from ...

Environment Nov 7, 2024

Plastics pollution worsens the impacts of all planetary boundaries, new study says

Plastics are not as safe and inert as previously thought. A new research study written by an international team of researchers uses the planetary boundaries framework to structure the rapidly mounting evidence of the effects ...

Astronomy Nov 6, 2024

Asteroid grains shed light on the outer solar system's origins

Tiny grains from a distant asteroid are revealing clues to the magnetic forces that shaped the far reaches of the solar system more than 4.6 billion years ago.

Planetary Sciences Nov 5, 2024

How many additional exoplanets are in known systems?

One thing we've learned in recent decades is that exoplanets are surprisingly common. So far, we've confirmed nearly 6,000 planets, and we have evidence for thousands more. Most of these planets were discovered using the ...

Astronomy Nov 1, 2024

Hubble and Webb probe surprisingly smooth disk around Vega

In the 1997 movie "Contact," adapted from Carl Sagan's 1985 novel, the lead character scientist Ellie Arroway (played by actor Jodi Foster) takes a space-alien-built wormhole ride to the star Vega. She emerges inside a snowstorm ...

Astrobiology Oct 28, 2024

Here are some potentially habitable world targets for the upcoming LIFE mission

The odds are good that we are not alone in the universe. We have found thousands of exoplanets so far, and there are likely billions of potentially habitable planets in our galaxy alone. But finding evidence of extraterrestrial ...

Planetary Sciences Oct 11, 2024

Exoplanet discovered in a binary system could explain why red dwarfs form massive planets

In recent years, the number of known extrasolar planets (aka. exoplanets) has grown exponentially. To date, 5,799 exoplanets have been confirmed in 4,310 star systems, with thousands more candidates awaiting confirmation. ...

Planetary Sciences Oct 4, 2024

Winds of change: Webb reveals forces that shape protoplanetary disks

Every second, more than 3,000 stars are born in the visible universe. Many are surrounded by what astronomers call a protoplanetary disk—a swirling "pancake" of hot gas and dust from which planets form. The exact processes ...

page 33 from 40