Early Earth hazy one day, clear the next
Hazy days A new study of ancient South African rocks indicates Earth may have experienced huge swings in the composition of its early atmosphere.
Why the 'Man in the Moon' faces Earth
Man in the moon The reason why the near side of the Moon always faces the Earth may be the result of it being a 'loaded dice', according to a team of
Eye problems common in astronauts
Space oddity Brain and eye problems have surfaced in astronauts who spent more than a month in space, marking a potential setback to plans for longer
Desert dunes created by erosion not wind
Sand dune creation Some linear sand dunes may have formed through a process called wind-rift erosion, rather than simple deposits of windblown sand,
Astronomers find oldest galactic cluster
Ancient worlds Scientists have discovered the oldest galaxy cluster ever detected.
The newly found cluster is 10.3 billion light years away a
Earth braces for biggest solar storm in five years
Solar flare Huge explosions on the sun's surface are sparking the biggest radiation and geomagnetic storm that Earth has experienced in five years, a
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