Mind Matters Natural and Artificial Intelligence News and Analysis

TagExoplanets (water)

exoplanet-stockpack-adobe-stock
Exoplanet

Researchers: Maybe Half of Earth-Sized Planets Missed by Studies

It’s not clear how many planets are in Earth’s size range but that is important for physics reasons for habitability as we know it

A recent study suggests that Earth-sized planets may be missed if they are orbiting one of two binary stars: Earth-sized planets may be much more common than previously realized. Astronomers working at NASA Ames Research Center have used the twin telescopes of the international Gemini Observatory, a Program of NSF’s NOIRLab, to determine that many planet-hosting stars identified by NASA’s TESS exoplanet-hunting mission are actually pairs of stars—known as binary stars—where the planets orbit one of the stars in the pair. After examining these binary stars, the team has concluded that Earth-sized planets in many two-star systems might be going unnoticed by transit searches like TESS’s, which look for changes in the light from a star when a planet passes…

alien-world-exoplanet-in-the-habitable-zone-planet-with-moon-water-and-plant-life-stockpack-adobe-stock.jpg
alien world, exoplanet in the habitable zone, planet with moon, water and plant life

Could the Universe Be Swimming in Watery Planets?

A new hypothesis of planet formation means that watery worlds may be common rather than rare

As the Mars Rover Perseverance motors around looking for evidence of past life on a now- mostly dry planet, some researchers are asking, can we be sure that most planets in our galaxy are dry? A common assumption among exoplanet experts is that most planets got their water via a chance hit early on from an icy asteroid. But researchers from the GLOBE Institute at the University of Copenhagen offer an alternative scenario, based on the millimetre-sized particles of ice and carbon that orbit all the young stars in our Milky Way galaxy. If masses of these particles are incorporated into a planet from its beginning, it isn’t a matter of chance whether the planet has water. It is a…