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  • TV Highlights This Week

News Articles: exoplanet

Scientists are debating whether data from the James Webb Space Telescope is really pointing to biosignature gases in the atmosphere of planet K2-18b.

Tagged as: 

  • Science

New analysis casts doubt on 'biosignatures' found on planet K2-18b

Researchers using data from the James Webb Space Telescope recently announced they had detected biosignature gases on planet K2-18b. A new analysis of the same data casts doubt on the earlier findings

April 25, 2025
|
By:
  • Nell Greenfieldboyce
This artist's impression depicts what a water world with a hydrogen atmosphere, such as planet K2-18b, might look like.

Tagged as: 

  • Science

Are there signs of life on alien planet K2-18b, or is it just a lot of hot air?

The James Webb Space Telescope may have detected life-associated gas in the atmosphere of a far-off planet. The news is being greeted with both enthusiasm and skepticism.

April 17, 2025
|
By:
  • Nell Greenfieldboyce

Tagged as: 

  • Space

Venus and Earth used to look like 'twin' planets. What happened?

Earth, Mars and Venus all looked pretty similar when they first formed. Today, Mars is dry, cold, and dusty; Venus has a hot, crushing atmosphere. Why did these sibling planets turn out so different?

May 08, 2024
|
By:
  • Regina G. Barber
An artistic depiction of the planet WASP-107b. Observations by the James Webb Space Telescope suggest this hot gas giant has clouds made of sand.

Tagged as: 

  • Space

Clouds made of sand make for a strange kind of rain on this hot planet

On Earth, clouds and rain are made of water. But the James Webb Space Telescope has found that on a planet called WASP-107b, the rain and clouds are made of sand.

November 15, 2023
|
By:
  • Nell Greenfieldboyce
This artist's impression shows a hazy sub-Neptune-sized planet recently observed with the James Webb Space Telescope.

Tagged as: 

  • Space

The James Webb Space Telescope reveals a mysterious planet to be weirdly shiny

Astronomers pointed the James Webb Space Telescope at a common kind of planet that's bigger than Earth but smaller than Neptune. What they saw wasn't what they expected.

May 10, 2023
|
By:
  • Nell Greenfieldboyce
This image made available by NASA shows an illustration of the Transiting Exoplanet Survey Satellite (TESS).

Tagged as: 

  • Space

There are more than 5,000 confirmed planets beyond our solar system, NASA says

These so-called exoplanets include rocky worlds similar in size to Earth, gas giants larger than Jupiter and even"'mini-Neptunes."

March 22, 2022
|
By:
  • Joe Hernandez
The planet-hunting telescope TESS depicted in front of a lava world orbiting a small red star.

Tagged as: 

  • Space

Astronomers find a new planet that's mostly made of iron

NASA's TESS telescope finds a small, iron-rich planet which could help explain the origins of Mercury, the innermost planet in our solar system

December 03, 2021
|
By:
  • Nell Greenfieldboyce
This new perspective of Jupiter from the south makes the Great Red Spot appear as though it is in northern territory. This view is unique to Juno.

Tagged as: 

  • Science

In Jupiter's swirling Great Red Spot, NASA spacecraft finds hidden depths

NASA's Juno spacecraft sweeps over Jupiter's Great Red Spot and makes a 3D map of the giant storm. The findings could shed light on gas giant exoplanets in distant solar systems.

November 09, 2021
|
By:
  • Brendan Byrne
Technicians work on NASA's James Webb Space Telescope, which will launch in December. Astronomers say the next big telescope should be designed to search signs of life on planets that orbit distant stars.

Tagged as: 

  • Space

Astronomers want NASA to build a giant space telescope to peer at alien Earths

NASA should work toward a new space telescope that could view small planets around distant stars with the potential to host life, expert panel says

November 04, 2021
|
By:
  • Nell Greenfieldboyce

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