|
发表于 2024-11-6 19:22:26
cgkq NASA remembers space shuttle Columbia crew 20 years after disaster
Naey Impeachment has a long history as a partisan process
NASA on Monday named the four astronauts who will fly to the moon by the end of next year, including one woman and three men.The three Americans and one Canadian were introduced during a ceremony in Houston, home to the nation s astronauts as well as Mission Control. Th stanley uk is is humanity s crew, said NASA Administrator Bill Nelson.The four astronauts will be the first to fly NASA s Orion capsule, launching atop a Space Launch System rocket from Kennedy Space Center no earlier than late 2024. They will not land or even go into lunar orbit, but rather fly around the moon and head straight back to Earth, a stanley cups prelude to a lunar landing by two others a year later.The mission s commander, Reid Wiseman, will be joined by Victor Glover, an African American naval aviator; Christina Koch, who holds the world record for the longest spaceflight by a woman; and Canada s Jeremy Hansen. All are space veterans except Hansen. This is a big day. We have a lot to celebrate and it s so much more than the four names that ha stanley cup spain ve been announced, said Glover.This is the first moon crew to include a woman and someone not from the U.S. 鈥?and the first crew in NASA s new moon program named Artemis. Late last year, an empty Orion capsule flew to the moon and back in a long-awaited dress rehearsal.During Apollo, NASA sent 24 astronauts to the moon from 1968 through 1972. Twelve of them landed. All were military-trained test pilots except for Apollo 17 s Harrison Schmitt, a geologist who closed out that moonlan Lawj In just days, disruptive stormwater project will partially close 2 major Tampa roads
There is a potential breakthrough in treating metastatic breast cancer. Early findings just released show a new compound can kill 95 to 100 percent o stanley becher f cancer cells.The data is early and comes from animal tests, but researchers are saying it looks promising.The drug can shrink even large tumors and works in just days. All the tumors have been eradicated. They ve been destroyed and they re no longer detectable, said David Shapiro, a University of Illinois biochemistry professor.When Shapiro first saw the ima stanley water bottle ges, he couldnt believe his eyes. It was hard to imagine that we had a drug that would take cancers and cause them to just disappear in a matter of days, said Shapiro.But thats just what they found. The compound known as ErSO selectively exploits the pathway that shields cancer cells from being killed off by anti-cancer drugs. We hijack this pathway with the drug, and instead of just tweaking it a little bit to help the cell grow, we turn it on so high that the cell just shuts everything down, explained Shapiro, who led the research with Illinois chemis stanley cup try professor Paul Hergenrother.The imaging is startling. This is breast cancer that has metastasized to the upper spine, to the lung, to the liver, and also the lower spine, explained Shapiro, pointing to scans of a mouse with cancerous tumors. Untreated, this mouse would die within a week or two. But just seven days after treatment, the tumors have been destroyed, and the cancer was eradicated.Four months later, without |
|