• Home
  • Top News
  • World
  • Economy
  • Science
  • Tech
  • Sport
  • Entertainment
  • Contact Form
SwordsToday.ie
No Result
View All Result
No Result
View All Result
SwordsToday.ie
No Result
View All Result

Two oceanic planets discovered | Press

Jake Pearson by Jake Pearson
December 16, 2022
in Science
0
Two oceanic planets discovered |  Press

An ocean 2000 km deep. Water under unimaginable pressure. Astronomers at the University of Montreal announced on Thursday the discovery of two exoplanets.


Posted at 12:00 am



to share

“This is a great discovery in exoastronomy,” explains University of Montreal astronomer Bion Benneke, who is one of the authors of the study published in the journal Thursday. Natural Astronomy. “This is the first time we have two exoplanets, and a good explanation for their low density is that a good fraction of their mass is in water or less dense matter. »

Kepler-138c and Kepler-138d, located 218 light-years from Earth in the constellation Lyra, are slightly larger than Earth. Thanks to the pictures from the space telescope Hubble etc Spitzer, the Montreal researchers found, their density means these exoplanets must be composed of material lighter than rock but heavier than the hydrogen or helium that make up most of gas giants like Jupiter. “We’re talking about nitrogen, methane and water,” says Benneke. Water should dominate. A mostly watery ocean should cover a quarter to a half of the exoplanet’s mass.

In August, the same team discovered another “ocean” exoplanet, TOI-1452 b. “But it was just a more likely candidate than the other ocean planets discovered so far,” Bennecke said. With Kepler-138 c and d we are almost certain. »

Great pressures

A 2,000-kilometer-deep ocean implies enormous pressure that can turn a mixture of water, methane, and nitrogen into a “supercritical” fluid, and has the properties of mixing liquids and solids.

Two exoplanets have been described Natural Astronomy Three times the diameter of Earth, but twice the mass. “Most Earth-like planets are rocky. Kepler-138c and D are close to the icy moons of Saturn, Jupiter Enceladus and Europa. »

See also  Mars' groundwater is a good source of oxygen

Learn more

  • 4 km
    Average depth of Earth’s oceans

    Source: University of Montreal

Jake Pearson

Prone to fits of apathy. Unable to type with boxing gloves on. Internet advocate. Avid travel enthusiast. Entrepreneur. Music expert.

Previous Post

The most sung chant in contemporary sports

Next Post

Rugby. Netflix plans behind-the-scenes documentary on 2023 6 Nations tournament

Next Post
Le XV de France tentera de défendre son, Grand Chelem à l

Rugby. Netflix plans behind-the-scenes documentary on 2023 6 Nations tournament

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Navigate

  • Home
  • Top News
  • World
  • Economy
  • Science
  • Tech
  • Sport
  • Entertainment
  • Contact Form

Pages

  • About Us
  • DMCA
  • Privacy Policy
  • Editorial Policy
  • Contact Form
  • About Us
  • DMCA
  • Privacy Policy
  • Editorial Policy
  • Contact Form

© 2023 JNews - Premium WordPress news & magazine theme by Jegtheme.

No Result
View All Result
  • About Us
  • Contact Form
  • DMCA
  • Editorial Policy
  • Privacy Policy

© 2023 JNews - Premium WordPress news & magazine theme by Jegtheme.