Carl Sagan wrote, “We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars.” But how will humans or our machine representatives
fly to the stars? [more inside]
posted by audi alteram partem
on May 1, 2012 -
42 comments
Sunspots, first observed by Galileo, normally follow an 11-year cycle. We are into a few years into (recorded) cycle number 24 but according to NASA it's looking rather
underpowered. Nobody is certain exactly what the consequences will be, but one distinct possibility is a
cold period; a previous low in solar activity, the
Maunder minimum, is correlated with a brief
Little Ice Age. Nobody really knows how this unusual solar weather pattern might interact with human-caused climate change.
Previously, albeit somewhat controversially.
posted by anigbrowl
on Jun 14, 2011 -
28 comments
The Carnegie Institution for Science reports "a much higher water content in the Moon’s interior than previous studies." For decades, the moon's water content was estimated at less than 1 part per billion; the new estimates range from 64 ppb to 5 parts per million. A scientist at Washington University said, "We can now finally begin to consider the implications—and the origin—of water in the interior of the Moon.”
There's more at
NASA and the
BBC, and the full paper is available at
PNAS (PDF).
posted by Stan Carey
on Jun 15, 2010 -
21 comments
