Uncategorized
- Earth
Sex and the sewage
Chemicals in sewage sludge appear to have stunted the testes and fostered other reproductive-system changes in fetal lambs.
- Health & Medicine
Monthly cycle changes women’s brains
Activity in a brain region that regulates emotions fluctuates over the course of a woman's menstrual cycle.
- Planetary Science
Cassini snaps icy moon Dione
Saturn's small moon Dione has a heavily-cratered, fractured surface.
- Humans
Katrina’s Fallout
Scientists whose laboratories were devastated by Hurricane Katrina have found help, and sometimes safe havens for their studies, from colleagues around the nation.
- Planetary Science
Groovy Science
The Cassini spacecraft is shedding new light on Saturn's icy rings.
- Math
Ranking College Football Teams
Network math leads to an alternative, simpler ranking scheme for college football.
- Humans
From the November 9, 1935, issue
Beauty in a machine shop, a cloud of island universes, and moon-made earthquakes.
- Astronomy
Moon Zoom
Imagine riding a magic carpet around the moon and being able to zoom down to any point or appear magically at any location. NASA has developed software that allows you to interactively browse three-dimensional images of the moon, based on data obtained by the Clementine spacecraft. These Web pages provide information about downloading the software, […]
- Planetary Science
Protecting Earth: Gravitational tractor could lure asteroids off course
Relying solely on the tug of gravity, a proposed spacecraft could divert an asteroid on a collision course with Earth.
-
19612
I’m surprised that NASA envisions an absurdly massive, nuclear-powered “gravitational tug” to avoid “the biggest problem” of a contact-tug’s need to “fir[e] its rocket engine only at specific times” to compensate for an asteroid’s rotation as mentioned in this article. Cassini, in orbit around Saturn, fires its rocket engine “only at specific times” routinely. Voyager-1 […]
- Physics
Ghostly Electrons: Particles flit through atom-thin islands
Electrical measurements of one-atom-thick slices of carbon reveal extraordinary electronic properties, including electrons that seem massless and move at blazing speeds.
- Archaeology
From prison yard to holy ground
Archaeological excavations at a prison near Megiddo, Israel, have unearthed the remains of what may be one of the region's oldest Christian churches.
