protoplanet
Americannoun
noun
Etymology
Origin of protoplanet
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A giant collision between the young Earth and a smaller protoplanet has long been the prevailing theory for the Moon’s formation.
From Scientific American ● Nov. 2, 2023
Perhaps, the new study suggests, those clumps came from the protoplanet that smashed into Earth, leading to the moon’s formation.
From National Geographic ● Nov. 1, 2023
"We think the Earth-Moon system formed following a giant impact between early Earth and another protoplanet," said Rufu, a Sagan Fellow who is the second author of a Science Advances paper.
From Science Daily ● Sep. 18, 2023
These rocks helped show, for example, that the moon probably formed after an extremely violent collision between baby Earth and another protoplanet.
From New York Times ● Dec. 14, 2022
If a protoplanet gets to several Earth masses, it can grab a thick envelope of gas and become a gas giant like Jupiter or Saturn.
From Science Magazine ● Apr. 3, 2022
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
