Space on MSN

Earth-Size Planet Found In TOI 700 System's Habitable Zone

NASA’s Transiting Exoplanet Survey Satellite (TESS) has been used to discover Earth-size planet TOI 700 e. It is "orbiting ...
Amazon S3 on MSN

What if all the planets suddenly doubled in size?

What if all the planets suddenly doubled in size? Imagine the gravitational, atmospheric, and orbital upheaval across the ...
Phys.org

A second instrument on HWO could track down nearby Earth-size planets

The Habitable Worlds Observatory (HWO) is slated to be the next Great Observatory for the world. Its main focus has been searching for biosignatures in the atmospheres of at least 25 Earth-like ...
Live Science

'Planet Y' theory hints at hidden Earth-size world lurking in the solar system — and it could be much closer to us than 'Planet Nine'

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth than the hypothetical Planet X, which astronomers have been hunting for ...
KOAT Albuquerque

New Mexico astronomer identifies gap in planet sizes

CONFIDENCE IN HAPPENING YESTERDAY. NEW MEXICO STATE UNIVERSITY ASTRONOMER RECENTLY SAW SOMETHING UNUSUAL DURING HIS RESEARCH OF SPACE, AND IT COULD HELP US UNDERSTAND HOW PLANETS FORM. VLADIMIR LYRA ...
Astronomy

Before spacecraft, how did astronomers determine the mass, size, and composition of the giant planets?

Planetary size was determined pre-spacecraft by measuring the planet's angular diameter and its distance from Earth (in AU, later converted to terrestrial units after the AU was accurately measured ...
Mashable

The Webb telescope's look at an Earth-size alien planet was bleak

Scientists did not find a robust atmosphere around TRAPPIST-1d, an Earth-size exoplanet many hoped would show signs of having air. Credit: NASA / ESA / CSA / J. Olmsted illustration As scientists ...
New Scientist

A planet the size of Saturn could orbit the nearest sun-like star

A giant planet the size of Saturn orbiting a sun-like star has potentially been identified in our nearest neighbouring stellar system, Alpha Centauri. At just four light years from Earth, Alpha ...
ExtremeTech

Astronomers May Have Underestimated the Size of Hundreds of Exoplanets

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Yahoo

Bad news for alien life? Earth-size planets may be less common than we thought

As many as 200 worlds beyond our solar system discovered by astronomers may be larger than estimated, which could influence the search for extraterrestrial life. That's the theory of a team of ...
GitHub

A devlog for my Scratch game Planet Gen.

There was an error while loading. Please reload this page. Some versions may have been lost, since I hadn't been tracking since the start, but I did my best effort to ...
Mashable

A Jupiter-size planet as delicate as cotton candy provokes its star

An exoplanet orbiting close to its host star triggers violent flares that are destroying its atmosphere, according to new research from the European Space Agency's Cheops mission. Credit: Janine ...