Posts tagged science
Next time you’re swimming in the ocean, consider this: part of the water is older than the sun.
So concludes a team of scientists who ran computer models comparing the ratios of hydrogen isotopes over time. Taking into account new insights that the solar nebula had less ionizing radiation than previously thought, the models show that at least some of the water found in the ocean, as well as in comets, meteorites and on the moon, predate the sun’s birth. Read more
At the heart of a big galaxy lies a big black hole, regions so dense with matter that not even light can escape their gravitational grip. Little galaxies have little black holes — or so scientists thought.
Consider M60-UCD1, an ultra-compact dwarf galaxy located about 55 million light-years from Earth in the Virgo cluster. Despite its diminutive stance, the galaxy appears to harbor a supermassive black hole, one more fitting in a galaxy 80 times bigger.
The discovery may help resolve a long-standing mystery about ultra-compact dwarf galaxies, which are densely packed, spherical conglomerations of stars. Read more
Scientists said Tuesday a female colossal squid weighing an estimated 350 kilograms (770 lbs) and thought to be only the second intact specimen ever found was carrying eggs when discovered in the Antarctic.
NASA is working on a new instrument for the International Space Station that will create a 3-D map of the Earth’s forests, in order to measure the role of trees in scrubbing carbon from the atmosphere.
The new instrument will use lidar, a laser system for measuring distance between the space-based instrument and the surface. Called the Global Ecosystem Dynamics Investigation (GEDI) lidar, the system will be put together at NASA’s Goddard Space Flight Center in Greenbelt, Md.