The invention of the CD player
Want to know who invented the basic technology that made possible CD and DVD players possible? Take a look at this restrospective describing the discovery, from Physical Review Focus of the American Physcial Society.
Category: Behind The Black
Scientists measure the rise and fall of lakes on Titan
It appears we are entering the dry season on Titan. Scientists have observed a 1 meter drop in the levels of Titan’s methane lakes over the last four years as the seasons on the moon go from summer to fall. Fun quote: “[The scientists] report that the shoreline of Ontario Lacus receded by about 10 kilometers (6 miles) from June 2005 to July 2009.”
AP reports 25,000 new asteroids found by Wise
An AP report today says that the infrared WISE space telescope has catalogued 25,000 new asteroids, 95 of which are near Earth objects. Actual data, however, has not yet been released.
More on firing of Cathelic teacher
Gender politics at NASA
O joy! It’s time to favor gender over achievement at NASA. The Obama administration is considering using governmental authority at NASA and other agencies to guarantee that the same number of women receive science, technology, engineering, and math degrees as men. The actual White House statement emphasizes the need “to ensure equity in science, technology, engineering, and math (STEM) education programs.” [emphasis mine].
If you want to be really annoyed, download NASA’s Office of Diversity and Equal Opportunity documentation [pdf] and read how institutions are expected to do “periodic reviews of data broken down by gender. . . to ensure program policies and practices are not having a negative impact on program participation.” [page 5]
In other words, NASA should decide whether to provide education funds to universities, based not on the ability of those universities produce qualified engineers and scientists of any sex but on the number of women in their programs.
Genetically modified mosquito developed that can’t carry malaria
Scientists say they have successfully produced a genetically modified mosquito that is unable to carry the malaria parasite. If so, and this mosquito can be bred throughout the mosquito population, it will eradicate malaria entirely.
New plan from the Senate
This analysis of the Senate budget plan that passed the Senate Commerce committee today hits all the most important points. Key quote (in connection with the Senate’s mandate that NASA start over in building a new heavy lift rocket):
Over the last five years, Constellation has cost at least $9 billion and produced little more than one test flight for a stripped-down version of the program’s Ares I rocket. While the Senate plan instructs NASA to salvage parts of Constellation when possible – and provides $11 billion over the next several years — it will take time and resources to create a new design. Adding to the pressure is the 2016 deadline that Congress gives NASA to have the new vehicle ready.
Galaxy Song from Monty Python
An evening pause: Last night was Judy Garland and Trolley Song. Tonight, how about Galaxy Song from Monty Python? (Thanks to Jeff Wasserman for the tip)
Senate deal for NASA
More coverage describing today’s Senate committee vote on the 2011 NASA budget. Interestingly, the Commerce committee and a number of its members have each issued their own press releases. I get the feeling they are trying to convince us they have acomplished something. Here are two from the chairman and ranking member:
Military technology to spot mines and caves
More cave news, this time on Earth. Lockheed Martin, under the direction of DARPA, has developed technology capable of mapping underground mines and caves.
The solar minimum and the Earth’s upper atmosphere
NASA scientists report, not surprisingly, that the Earth’s upper atmosphere experienced the largest contraction ever recorded during the recent very deep and prolonged solar minimum.
More cave images from the Moon
James Fincannon of NASA has forwarded me two additional pictures of the same cave on the Moon, taken recently at different times by the camera on Lunar Reconnaissance Orbiter and made available by the Goddard Space Flight Center and Arizona State University.
These images clearly show that the skylight looks down into a much larger space, with the underground room belling out from the skylight in all directions. This can be seen by how the angle of sunlight hitting the floor of the cave changes over time. Below is a very crude cartoon I have drawn to illustrate what I think we are seeing in the image on the left. The dashed lines indicate unseen walls whose precise location is not yet determined.
James also forwarded me this link, showing even more images of additional lava tube skylights on the Moon.