binary star

noun

Definition of binary star

: a system of two stars that revolve around each other under their mutual gravitation

Examples of binary star in a Sentence

Recent Examples on the Web However, such dips could also be created by other sources, such as spurious instrumental noise or binary stars in the background eclipsing each other, creating false positive signals. Ravi Kumar Kopparapu, The Conversation, "An Earth-sized planet found in the habitable zone of a nearby star," 7 Jan. 2020 There's also a theory concerning the space oddity G2, which scientists believe is likely a pair of binary stars. David Grossman, Popular Mechanics, "That Big Black Hole of Ours Sure Is Getting Hungry," 13 Sep. 2019 Researchers find binary star systems fascinating because of their turbulent gravitational environments, which complicate how planets clump up from motes of interstellar dust. Michael Greshko, National Geographic, "The real science inspired by 'Star Wars'," 1 Dec. 2019 Imagine American politics as a system of binary stars, one Republican-conservative, the other Democratic-progressive. Lance Morrow, WSJ, "Save America From Aunt Sally," 3 Jan. 2019 Alternately, a nearby binary star could have caused the orbit early in the system's migration before establishing its current orbital perch. John Wenz, Popular Mechanics, "This Planet Has One of the Weirdest Orbits We've Ever Seen," 21 Mar. 2016 To be specific, protoplanetary disks typically form planets eventually, which means there’s a good chance there are planets out there orbiting binary star systems at all kinds of weird angles. Avery Thompson, Popular Mechanics, "Astronomers Discover Bizarre Quadruple Star System," 15 Jan. 2019 The plates are in surprisingly good condition and include early photographs of eclipses, Jupiter, binary stars, the Orion Nebula, the star Deneb, and many other celestial objects. Jay Bennett, Popular Mechanics, "Space Pictures From 1895 Found in a Basement," 29 Dec. 2015 The planets that researchers have turned up range from big and weird — like a Jupiter-sized planet orbiting a binary star system — to ones that are closer in size and orbit to Earth. Sean O'kane, The Verge, "NASA put its famous planet-hunting telescope to sleep because it’s almost out of fuel," 6 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'binary star.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of binary star

1826, in the meaning defined above

Keep scrolling for more

Learn More about binary star

Time Traveler for binary star

Time Traveler

The first known use of binary star was in 1826

See more words from the same year

Statistics for binary star

Last Updated

20 Jan 2020

Cite this Entry

“Binary star.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/binary%20star. Accessed 23 January 2020.

More from Merriam-Webster on binary star

Rhyming Dictionary: Words that rhyme with binary star

Britannica.com: Encyclopedia article about binary star

Comments on binary star

What made you want to look up binary star? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

out of the ordinary or unreasonable

Get Word of the Day daily email!

Test Your Vocabulary

Intact Latin Quiz

  • roman tablet
  • What did focus mean in Latin?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!