The discovery of gravitational waves confirms an important aspect of the theory of relativity, but it does much more than that. Quite literally, it opens up a new chapter in our exploration of the cosmos, one where electromagnetic radiation is no longer our only tool for “seeing” the universe. As MIT astrophysicist Scott Hughes told Gizmodo in a phone interview, we can use gravitational waves to probe mysterious celestial objects like black holes and neutron stars, which typically no light.
“There’s a lot of rich information encoded in gravitational waves,” he said, noting that the shape of a spacetime ripple can tell us about the size and motion of the object that produced it. “As an astronomer, I try to think about how to go from the ‘sound’ of the waveform that LIGO measures, to the parameters that produce that waveform.”
Everything shifted this morning.
In the 100th-anniversary year of Einstein’s theory of relativity, scientists announced they have proved it.
Using a stunning display of technological prowess, a group of physicists measured gravitational waves, a ripple in the fabric of space caused by the collision of two immense objects far out in the universe.
The discovery is on par with the invention of the telescope, said Lawrence Krauss, a theoretical physicist and cosmologist at Arizona State University.
“It heralds what I think is the beginning of the new astronomy for the 21st century,” Krauss said. “Gravitational-wave astronomy will be the astronomy of the 21st century. It’s opened a new window on the universe, just like the telescope in some sense or when we first used radio waves to explore the universe.”
The mile-wide open pit and 800-foot-high piles of toxic mine waste would permanently destroy thousands of acres of occupied, federally protected jaguar habitat where this jaguar lives.“The Rosemont Mine would destroy El Jefe’s home and severely hamstring recovery of jaguars in the United States,” said a prepared statement from Randy Serraglio, conservation advocate with the Center for Biological Diversity. “At ground zero for the mine is the intersection of three major wildlife corridors that are essential for jaguars moving back into the U.S. to reclaim lost territory. The Santa Rita Mountains are critically important to jaguar recovery in this country, and they must be protected.”
Conservation CATalyst and the Center for Biological Diversity released new video today of the only known wild jaguar currently in the United States.Captured on remote sensor cameras in the Santa Rita Mountains just outside of Tucson, the dramatic footage provides a glimpse of the secretive life of one of nature’s most majestic and charismatic creatures. This is the first-ever publicly released video of the #jaguar, recently named 'El Jefe' by Tucson students, and it comes at a critical point in this cat’s conservation. Learn more here: http://www.biologicaldiversity.org/news/press_releases/2016/jaguar-02-03-2016.htmlPosted by Center for Biological Diversity on Wednesday, February 3, 2016
By the end of the century, the season averaged growing temperature will very likely exceed the highest temperature ever recorded throughout the tropics and subtropics. By 2050, the increase in temperature alone is projected to cause a 20% reduction in the yield of all of the major grains (maize, wheat, rice and soybeans). The breadbasket countries in the midlatitudes will experience marked increases in year-to-year volatility in crop production. Increasing stresses on the major crops due to climate change, coupled with the increasing demand for food due to increasing population and development, present significant challenges to achieving global food security. This lecture explores the likely impact of climate change and volatility on food production and availability in the foreseeable future.The lectures draw a full house to Centennial Hall, so get there ahead of the 7 p.m. start time if you want a good seat. More details here.
Our Garden Tour features four gorgeous Westside home gardens with talks at each on helpful topics for… More