Rocky exoplanets are even stranger than we thought

An astronomer from NSF's NOIRLab has teamed up with a geologist from California State University, Fresno, to make the first estimates of rock types that exist on planets orbiting nearby stars. After studying the chemical ...

Building planets from protoplanetary discs

Planets and their stars form from the same reservoir of nebular material and their chemical compositions should therefore be correlated but the observed compositions of planets do not match completely those of their central ...

Ten mysteries of Venus

The surface of Venus is completely inhospitable for life: barren, dry, crushed under an atmosphere about 90 times the pressure of Earth's and roasted by temperatures two times hotter than an oven. But was it always that way? ...

Some of the world's oldest rubies linked to early life

While analyzing some of the world's oldest colored gemstones, researchers from the University of Waterloo discovered carbon residue that was once ancient life, encased in a 2.5 billion-year-old ruby.

Dwarf galaxy catches even smaller galaxy

Astronomers know that the Milky Way grew by taking in smaller galaxies. But now, a team of Italian-Dutch researchers has shown that a small galaxy neighboring the Milky Way has in turn absorbed an even smaller galaxy from ...

The planet does not fall far from the star

A compositional link between planets and their respective host star has long been assumed in astronomy. For the first time now, a team of scientists deliver empirical evidence to support the assumption—and partly contradict ...

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