Search results for planetesimals

Planetary Sciences Jun 17, 2024

Researchers uncover nitrogen's origin and early evolution on Earth

A research team led by Prof. Wang Wenzhong from the School of Earth and Space Sciences of the University of Science and Technology of China (USTC), in collaboration with international scholars, studied the fractionation behavior ...

Planetary Sciences Jun 18, 2024

In the hunt for a second Earth, look to small planets, says new research

Scientists around the world are constantly on the hunt for planets outside our solar system that could potentially provide a habitable environment for life.

Planetary Sciences Apr 16, 2024

Dating the solar system's giant planet orbital instability using enstatite meteorites

Evidence from the fragments of a destroyed asteroid suggests that the shift in the positions of the giant planets in our solar system billions of years ago happened between 60–100 million years after the solar system's ...

Astronomy May 3, 2024

Hungry, hungry white dwarfs: Solving the puzzle of stellar metal pollution

Dead stars known as white dwarfs, have a mass like the sun while being similar in size to Earth. They are common in our galaxy, as 97% of stars will eventually become white dwarfs. As stars reach the end of their lives, their ...

Planetary Sciences Jun 4, 2024

Simulation of factors that led to Arrokoth's red color suggest its surface is rich in sugars

A team of space scientists and chemists at the University of Hawaii at Mānoa, Université Côte d'Azur and the Southwest Research Institute has found the planetesimal Arrokoth likely gets its red color from a surface rich ...

Astronomy Jun 6, 2024

Earliest detection of metal challenges what we know about the first galaxies

Astronomers have detected carbon in a galaxy just 350 million years after the Big Bang, the earliest detection of any element in the universe other than hydrogen.

Space Exploration May 22, 2024

NASA's Psyche fires up its sci-fi-worthy thrusters

NASA's Psyche spacecraft passed its six-month checkup with a clean bill of health, and there's no holding back now. Navigators are firing its futuristic-looking electric thrusters, which emit a blue glow, nearly nonstop as ...

Planetary Sciences May 15, 2024

TRAPPIST-1 outer planets likely have water, research suggests

The TRAPPIST-1 solar system generated a swell of interest when it was observed several years ago. In 2016, astronomers using the Transiting Planets and Planetesimals Small Telescope (TRAPPIST) at La Silla Observatory in Chile ...

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 Feb 1, 2023

Numerical simulations of planetesimal formation reproduce key properties of asteroids, comets

With simulations that go into finer details than ever before, Brooke Polak of the University of Heidelberg and Hubert Klahr at the Max Planck Institute for Astronomy (MPIA) have modeled a key phase in the formation of planets ...

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