Top ten space finds of 2009
10. Star Crust is ten billion times
stronger than steel
Move over, Superman. The Man of Steel has nothing on the collapsed
cores of massive snuffed-out stars, which constitute the strongest known
material in the universe, a May study said.
9. Could Jupiter moon harbour
fish-size life?
“I’d be shocked if no life existed on Europa”, one scientist said,
and provocative research described in November suggested the moon’s seas
have enough oxygen for fishlike animals.
8. 32 new planets found outside our
solar system
The massive haul of new worlds brings the number of known extrasolar
planets to more than 400, astronomers announced in October.
7. Liquid water recently seen on Mars
Mars pictures taken in Summer 2008 showed strange globs on the leg of
the Phoenix Mars lander that seemed to behave like liquid water, a
February paper reported.
6. Most Earthlike planet yet found
may have liquid oceans
Measurements announced in April suggested that the planet known as
Gliese 581d has a lot more in common with Earth than first thought, and
it has a previously unknown sister planet that is the lightest yet
found.
5. Particles larger than galaxies
fill the universe?
The oldest of the subatomic particles called neutrinos might each
encompass a space larger than thousands of galaxies, according to new
simulations described in June.
4. First proof of ancient Mars
lakeshores found
High-resolution pictures of a Martian valley revealed
three-billion-year-old shorelines along what was once a body of water
about the size of Lake Champlain, researchers said in June.
3. Water on the moon confirmed by
NASA crashes
It’s official, there’s water on the moon, and a ‘significant amount’
of it too, members of NASA’s moon-crash mission, LCROSS, announced in
November.
2. Green ‘two-tailed’ comet buzzed
Earth on one-time visit
When it swung through our solar system in late February, the recently
discovered comet Lulin seemed to have a second tail and a green glow,
and the sight will probably never again grace our nighttime skies.
1. Sun oddly quiet, hints at next
‘little Ice Age;
In May the sun was still the most sluggish it had been in decades,
prompting concerns about a cooling effect on climate, but the dip in
solar activity wouldn’t be likely to fight global warming, researchers
cautioned. |