First, today's politics lesson from Republican House Speaker John Boehner, courtesy ABC News' George Stephanopoulos -
Speaker of the House John Boehner said he is in lockstep with the Tea Party on budget negotiations despite claims from Democrats that there could be a deal if only he could buck the Tea Party.Now, today's science lesson, courtesy NationalGeographic.com -
“Listen, there’s no daylight between the Tea Party and me,” Boehner told me today during our exclusive interview.
Black holes are the cold remnants of former stars, so dense that no matter—not even light—is able to escape their powerful gravitational pull.
While most stars end up as white dwarfs or neutron stars, black holes are the last evolutionary stage in the lifetimes of enormous stars that had been at least 10 or 15 times as massive as our own sun.