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 ...

Scientists discover 3 Earth-size exoplanets that may have double sunsets — like Tatooine in Star Wars

Using NASA's planet-hunting spacecraft TESS (Transiting Exoplanet Survey Satellite), astronomers have discovered three ...
Yahoo

Even planets have their (size) limits

A planet-forming disk made from rock and gas surrounds a young star. NASA/JPL-Caltech/SwRI/MSSS/ Gerald Eichstädt /Seán Doran Scientists have discovered over 4,000 ...
KSBW The Central Coast

Study: Billions of Earth-size planets in Milky Way

Our Milky Way is home to at least 17 billion planets that are similar in size to Earth, a new estimate suggests. That's more than two Earth-size planets for every person on the globe.Just how many are ...
mic

There’s a limit to how big planets can get, thanks to physics

Scientists have discovered over 4,000 exoplanets outside of our Solar System, according to NASA’s Exoplanet Archive. Some of these planets orbit multiple stars at the same time. Certain planets are so ...
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 ...
Earth.com

Star system found with six Neptune-size planets orbiting in perfect mathematical harmony

Scientists have discovered a rare six-planet system, HD 110067, where all planets orbit their star in perfect mathematical ...
SpaceRef

TRAPPIST-1 Has 7 Earth-Size Planets

This illustration shows what the TRAPPIST-1 planetary system may look like, based on available data about the planets’ diameters, masses, and distances from the host star. Astronomers have named them ...
SpaceNews

ALMA Measures Size of Seeds of Planets

Researchers using the Atacama Large Millimeter/submillimeter Array (ALMA) have, for the first time, achieved a precise size measurement of small dust particles around a young star through radio-wave ...
Salon

Even planets have their (size) limits

Scientists have discovered over 4,000 exoplanets outside of our Solar System, according to NASA’s Exoplanet Archive. Some of these planets orbit multiple stars at the same time. Certain planets are so ...
SpaceNews

TRAPPIST-1 Has 7 Earth-Size Planets

Five years ago, astronomers revealed a spectacular collection of other worlds: the TRAPPIST-1 system. Newspapers around the world printed the discovery on their front pages: Astronomers had found that ...
sciencex

Even planets have their (size) limits

Scientists have discovered over 4,000 exoplanets outside of our Solar System, according to NASA's Exoplanet Archive. Some of these planets orbit multiple stars at the same time. Certain planets are so ...