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Search results for planetesimals

Space Exploration Mar 1, 2024

When an object like 'Oumuamua comes around again, we could be ready with an interstellar object explorer

On October 19th, 2017, astronomers with the Pann-STARRS survey observed an interstellar object passing through our system—1I/2017 U1 'Oumuamua. This was the first time an ISO was detected, confirming that such objects pass ...

Astronomy Feb 27, 2024

Dust growth model finds planets may form more easily than previously thought

The building blocks of new planets could form more easily than previously thought, according to calculations by a team led by a RIKEN astrophysicist.

Astronomy Feb 9, 2024

Researchers discover cosmic dust storms from Type 1a supernova

Cosmic dust—like dust on Earth—comprises groupings of molecules that have condensed and stuck together in a grain. But the exact nature of dust creation in the universe has long been a mystery. Now, however, an international ...

Planetary Sciences Jan 12, 2024

Planetesimals are buffeted by wind in their nebula, throwing debris into space: Study

Before planets form around a young star, the protosolar disk is populated with innumerable planetesimals. Over time, these planetesimals combine to form planets, and the core accretion theory explains how that happens. But ...

Astronomy Jan 10, 2024

Webb discovers dusty 'cat's tail' in Beta Pictoris System

Beta Pictoris, a young planetary system located just 63 light-years away, continues to intrigue scientists even after decades of in-depth study. It possesses the first dust disk imaged around another star—a disk of debris ...

Astronomy Jan 9, 2024

Meteorite analysis shows Earth's building blocks contained water

When our sun was a young star, 4.56 billion years ago, what is now our solar system was just a disk of rocky dust and gas. Over tens of millions of years, tiny dust pebbles coalesced, like a snowball rolling larger and larger, ...

Space Exploration Dec 7, 2023

Psyche gamma-ray instrument hums to life, marking next generation for space exploration

Set 6.5 feet (2 meters) away from NASA's Psyche spacecraft on the tip of a boom, the mission's gamma-ray spectrometer (GRS) hummed to life on Nov. 6 for the first time since launch in mid-October. The GRS is one half of the ...

Astronomy Dec 6, 2023

NASA's Psyche delivers first images and other data

NASA's Psyche spacecraft is on a roll. In the eight weeks since it left Earth on Oct. 13, the orbiter has performed one successful operation after another, powering on scientific instruments, streaming data toward home, and ...

Earth Sciences Nov 21, 2023

Libyan desert's yellow glass: How we discovered the origin of these rare and mysterious shards

The Great Sand Sea Desert stretches over an area of 72,000km² linking Egypt and Libya. If you find yourself in a particular part of the desert in south-east Libya and south-western parts of Egypt, you'll spot pieces of yellow ...

Astronomy Oct 31, 2023

JWST searches for planets in the Fomalhaut system

The Fomalhaut system is nearby in astronomical terms, and it's also one of the brightest stars in the night sky. That means astronomers have studied it intensely over the years. Now that we have the powerful James Webb Space ...

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