For years, scientists have puzzled over why Earth and Mars are missing certain key elements. Now, a fresh study suggests ...

"The Solar Family" is an 11-minute educational film produced by Encyclopedia Britannica Films in 1936. It presents the evolution of the solar system through the lens of the planetesimal hypothesis ...

In this case, the planetesimal that was the beginning stage of Earth didn’t drop its MVEs at the start of its development. Instead, the loss of its MVEs occurred over a prolonged period of time, ...

Planetesimal collisions during planet formation in the early solar system. view more . Credit: Kouji Kanba. Understanding where Earth’s essential elements came from—and why some are missing ...

The so-called 'planetesimal belts' are filled with tiny millimeter-sized particles created by collisions between comets. Rings of comets have been discovered around 74 alien star systems ...

The vital ingredients for life on Earth may have been delivered by meteorites from larger bodies called "planetesimals" in the early solar system. The discovery could assist in the search for ...

An iron meteorite from the core of a melted planetesimal (left) and a chondrite meteorite, derived from a ‘primitive’, unmelted planetesimal (right). Credit: Rayssa Martins/Ross Findlay.

Anyone who’s watched the 2021 black comedy ‘Don’t Look Up’ will recall the plans, proposed by Mark Rylance’s odious ...

The metallic asteroid Psyche, shown in this artist’s concept, may be the exposed iron-nickel core — or a fragment of one — from a larger object early in the solar system.

Scientists Spot Massive Planetesimal Collision That Eclipsed Its Host Star for 500 Days How an accidental discovery uncovered a cataclysmic smash-up some 1,800 light years away. by Doris Elín Urrutia ...

A sample from the asteroid Bennu, brought back by the OSIRIS-REx mission, contains hints that it was once part of a planetesimal with conditions favourable for life to emerge ...