| |  Artist’s concept of a pole-oriented planet-forming disk, from the surface of one of its planets. The disk would appear as a broad band, rising almost perpendicularly from the planet's horizon. Image via University of Warwick/Mark Garlick. | | |
| Double star flips planet-forming disk into pole position | | | Our sun's planets orbit in a plane extending from the sun's equator. Astronomers have found a double-star system whose planet-forming disk has flipped up - perpendicular to what we'd expect - over the poles. What would nature be like on one of these worlds? Read more. | | |
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| Did life arrive on land earlier than thought? | | New clues from fossils from the oldest soils on Earth suggest that multicellular, land-dwelling organisms might have emerged much earlier than we thought. Read more.
 Fossil found in South Australia, dating to between 542 million to 635 million years ago, during a geologic period known as the Ediacaran. Image courtesy of Greg Retallack via University of Oregon. | | |
