Sarah Kendrew selects interesting and notable ResearchBlogging.org posts in the physical sciences, chemistry, engineering, computer science, geosciences and mathematics. She blogs about astronomy at One Small Step.
Welcome to a new week. Here’s some choice selections from the week in the physical and geo-sciences on ResearchBlogging.
On Breakdown: Science’s Smaller Questions, Sarah Scoles gives an excellent overview of new observations of Cygnus X-1, which have finally confirmed the black hole nature of this super energetic X-ray source in our Galaxy.
Phishing is one of the web criminal’s tools for snatching web users’ passwords. David Bradley dissects a proposed new method for authentication to protect against phishing, and is left with doubts.
In 2009, spectacular hole-punch clouds over Russia were mistaken for signs of aliens. Yet their explanation is far less exotic. On The Soft Anonymous, James talks about a recent paper that describes the physical mechanism responsible for these awesome cloud formations.