When stellar metallicity sparks planet formation

New research predicts the criteria needed for Earth-like planets to form around a star that have one-tenth the metallicity of our Sun. If researchers find small, rocky planets orbiting stars with lower metallicity, it may ...

Mantle neon illuminates Earth's formation

The Earth formed relatively quickly from the cloud of dust and gas around the Sun, trapping water and gases in the planet's mantle, according to research published Dec. 5 in the journal Nature. Apart from settling Earth's ...

Meteorites reveal warm water existed on Mars

New research by the University of Leicester and The Open University into evidence of water on Mars, sufficiently warm enough to support life, has been published this week in the journal Earth and Planetary Science Letters.

Space dust as Earth's sun shield

On a cold winter day, the warmth of the sun is welcome. Yet as humanity emits more and more greenhouse gases, the Earth's atmosphere traps more and more of the sun's energy and steadily increases the Earth's temperature. ...

Microbe risk when rover wheels hit martian dirt

Earth microbes trying to make it to Mars must survive sterilization in NASA's clean rooms, harsh cosmic rays during months of space travel, and the Red Planet's unforgiving surface environment. But any bacteria that successfully ...

Life on Mars: Will humans trash the planet like we have Earth?

Mountains of garbage, plastics that take thousands of years to disintegrate, oil spills in pristine environments from drilling into the soil or underneath the ocean: When we go to Mars, is it inevitable we'll repeat the same ...

A hot potential habitable exoplanet around Gliese 163

A new superterran exoplanet (aka Super-Earth) was found in the stellar habitable zone of the red dwarf star Gliese 163 by the European HARPS team. The planet, Gliese 163c, has a minimum mass of 6.9 Earth masses and takes ...

Exoplanets 101: Looking for life beyond our Solar System

Seven Earth-like planets orbiting a small star in our Galaxy called Trappist-1, revealed Wednesday, are the most recent—and arguably the most spectacular—in a string of exoplanet discoveries going back 20 years.

New theoretical models aid the search for Earth-like planets

Researchers from Bern have developed a method to simplify the search for Earth-like planets: By using new theoretical models they rule out the possibility of Earth-like conditions, and therefore life, on certain planets outside ...

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