Exoplanets Clue to Sun's Curious Chemistry

Space & Earth / Astronomy

11 hours ago | 4.9 / 5 (14) | 11

(PhysOrg.com) -- A ground-breaking census of 500 stars, 70 of which are known to host planets, has successfully linked the long-standing "lithium mystery" observed in the Sun to the presence of planetary systems. ...

Earth's early ocean cooled more than a billion years earlier than thought (w/ Video)

Space & Earth / Earth Sciences

10 hours ago | 4.9 / 5 (7) | 0

(PhysOrg.com) -- The scalding-hot sea that supposedly covered the early Earth may in fact never have existed, according to a new study by Stanford University researchers who analyzed isotope ratios in 3.4 ...

A bubbling ball of gas (w/ Video)

Space & Earth / Space Exploration

12 hours ago | 5 / 5 (12) | 4

The Sun is a bubbling mass. Packages of gas rise and sink, lending the sun its grainy surface structure, its granulation. Dark spots appear and disappear, clouds of matter dart up - and behind the whole thing ...

A Tale of Planetary Woe (w/ Video)

Space & Earth / Space Exploration

8 hours ago | 4.7 / 5 (6) | 1

Once upon a time — roughly four billion years ago — Mars was warm and wet, much like Earth. Liquid water flowed on the Martian surface in long rivers that emptied into shallow seas. A thick atmosphere blanketed ...

Researchers Discover Use for Carbon Dioxide in Conversion of Biomass Into Biofuel

Space & Earth / Environment

8 hours ago | 3.7 / 5 (7) | 1

(PhysOrg.com) -- Researchers at Columbia University have successfully discovered a beneficial use for carbon dioxide in the conversion of organic materials, such as grass and bark, into fuel. Their findings ...