August 25, 2011 |
For the first time, astronomers say they've borne witness to a supermassive black hole consuming a star. Two papers released Wednesday by the journal Nature describe powerful blasts of radiation whose brightness and behavior can be explained only by a sun-sized star being torn apart by the gravitational forces of a black hole at the center of its galaxy, the authors say. Scientists believe they have seen the aftermath of such stellar violence...
April 28, 2011 |
Constellation Energy Group Inc. has agreed to sell itself to Exelon Corp. in a $7.9-billion stock deal that would create the largest energy provider in the United States. The deal announced Thursday comes less than three years after Constellation narrowly averted bankruptcy and represents the Baltimore company's third attempt to sell itself since 2006. Chicago-based Exelon will have controlling interest in the combined company, if the deal is approved by shareholders and regulators.
April 21, 2011 |
Longtime Century City landlord JMB Realty Corp. wants to build the neighborhood's first office skyscraper in nearly a decade on a site once planned for a cluster of high-rise condominiums. The Chicago developer, through local affiliate Century City Realty, is seeking city approval for a 37-story tower on Avenue of the Stars at Constellation Boulevard that would be called Century City Center. JMB also will need to address homeowners concerned about growing density and traffic in their neighborhoods around Century City.
February 11, 2011 |
Out of the water for the first time since 1998, the 1854 sloop of war Constellation looked pretty good to its caretakers as they walked beneath its grimy hull, now propped up in dry dock at the Sparrows Point Shipyard. "I think we're surprised she's as clean as she is, for being in the water for 13 years," said Chris Rowsom, executive director for Historic Ships in Baltimore. "It shouldn't be too difficult to get her washed up and painted. " High on blocks just aft of Constellation is the 1944 submarine Torsk, which faces much more extensive work.
August 18, 2010 |
St. Petersburg, Fla. — Scientists have found evidence that oil has become toxic to marine organisms in a section of the Gulf of Mexico that supports the spawning grounds of commercially important fish species. Researchers from the University of South Florida said Tuesday that, in preliminary results, there appear to be droplets of oil among the sediments of a vital underwater canyon where clouds of oil from the BP spill were found. "So, indeed, the waters have a level of toxicity that needs to be recognized, and I think these were some of the first indicators that the base of the food web — the bacteria and the phytoplankton — may be affected," said David Hollander, chief scientist on a research vessel that just returned from a 10-day trip in the gulf.
July 17, 2010 |
In a cavernous structure at NASA's Plum Brook Station near Lake Erie, a concrete chamber five stories high rises from the ground. Its walls are 2 feet thick to withstand the blast of powerful gas-operated horns strong enough to destroy human organs. The $150-million facility was built to contain the next-generation manned spacecraft for the Constellation program, NASA's project to send humans back to the moon. It is the largest acoustic test chamber in the world, created to buffet the spacecraft with intense sound waves, simulating the stresses of launch.