• Contact Us
  • Login
No Result
View All Result
Thursday, September 28, 2023
National Tribune
SUBSCRIBE
  • World
  • Business
  • Politics
  • Science
  • Health
  • Opinion
  • World
  • Business
  • Politics
  • Science
  • Health
  • Opinion
No Result
View All Result
NT
No Result
View All Result
Home Earth-sized

TOI 700 d: Earth-sized planet found relatively nearby

by Associated News
January 7, 2020
in Earth-sized, planet, U.S. News
0
TOI 700 d: Earth-sized planet found relatively nearby
0
SHARES
4
VIEWS
Share on FacebookShare on Twitter

NASA has announced that its planet hunter satellite TESS discovered an Earth-sized world within the habitable range of its star, which could allow the presence of liquid water.
The planet, named “TOI 700 d”, is relatively close to Earth: only 100 light years away, NASA’s Jet Propulsion Laboratory said on Monday during the annual American Astronomical Society meeting in Honolulu, Hawaii.
“TESS was designed and launched specifically to find Earth-sized planets orbiting nearby stars,” said Paul Hertz, NASA astrophysics division director.
More:

China’s Long March 5 rocket can fly

Space 2019: What a year, what a decade we’ve had!

Boeing Starliner is back on Earth

TESS initially misclassified the star, which meant the planets appeared larger and hotter than they actually are. But several amateur astronomers, including high school student Alton Spencer – who works with members of the TESS team – identified the error.
“When we corrected the star’s parameters, the sizes of its planets dropped, and we realised the outermost one was about the size of Earth and in the habitable zone,” said Emily Gilbert, a graduate student at the University of Chicago.
The discovery was later confirmed by the Spitzer Space Telescope.
Habitable zone
A few other similar planets have been discovered before, notably by the former Kepler Space Telescope, but this is the first one discovered by TESS, which was launched in 2018.
TESS stabilises on one area of the sky to detect whether objects – planets – pass in front of stars, which causes a temporary drop in the stars’ luminosity. This allows TESS to infer the presence of a planet, its size and orbit.
Star TOI 700 is small, about 40 percent of the size of the Earth’s Sun and only about half as hot.
TESS discovered three planets in orbit, named TOI 700 b, c and d. Only “d” is in the so-called habitable zone, not too far from and not too close to the star, where the temperature could allow the presence of liquid water.
It is about 20 percent larger than Earth and orbits its star in 37 days. Planet 700 d receives 86 percent of the energy that Earth receives from the Sun.
It remains to be seen what 700 d is made of. Researchers have generated models based on the size and type of star in order to predict 700 d’s atmospheric composition and surface temperature.
In one simulation, NASA explained, the planet is covered in oceans with a “dense, carbon dioxide-dominated atmosphere similar to what scientists suspect surrounded Mars when it was young”.
The planet is tidally locked to the star, meaning that one side always faces the star, as is the case with the Moon and Earth.
This synchronous rotation meant that, in another model, one side of the planet was constantly covered in clouds.
A third simulation predicted an all-land world, where winds flow from the planet’s dark side to its light one.
Multiple astronomers will observe the planet with other instruments, in order to obtain new data that may match one of NASA’s models.
Continue Reading…

Tags: Earth-sizedplanet
Associated News

Associated News

Next Post
JNU attack: India police file case against injured student leader

JNU attack: India police file case against injured student leader

Leave a Reply Cancel reply

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

Recommended

George P. Bush, the only Bush still in public office, endorses President Trump

George P. Bush, the only Bush still in public office, endorses President Trump

3 years ago
Donald Trump set to issue executive orders on China, immigration, drug pricing

Donald Trump set to issue executive orders on China, immigration, drug pricing

3 years ago

Popular News

    About Us

    National Tribune is an independent newspaper and publishing company owned by the National Tribune Company, formed in 1877 in Washington, D.C.

    • World
    • Business
    • Politics
    • Science
    • Health
    • Opinion
    • Help
    • About Us
    • Subscriptions
    • Privacy Policy
    • Corporate
    • Terms Of Service
    • GDPR

    Connect With us

    • Contact Us

    © 1877 - 2023 NationalTribune.com

    No Result
    View All Result
    • About
    • About Us
    • Contact
    • Contact Us
    • Home
    • Home 1
    • Home 2
    • Home 3
    • Home 4
    • Home 5
    • Homepage
    • Homepage
    • Investor Relations
    • Log In
    • Member Directory
    • My Account
    • My Profile
    • News
    • Privacy Policy
    • Reset Password
    • Sign Up
    • We’re Hiring

    © 1877 - 2023 NationalTribune.com

    Welcome Back!

    Login to your account below

    Forgotten Password?

    Retrieve your password

    Please enter your username or email address to reset your password.

    Log In