A B-52 carries an ARRW on a captive carry flight over Edwards Air Force Base in 2019.
U.S. Air Force photo by Christopher Okula
The U.S. Defense Advanced Research Projects Agency tried again to test a hypersonic…
US President Joe Biden, seen here with Dr. Anthony Fauci, Jeffrey Zients, and NIH Director Dr. ... Francis Collins, has proposed the creation of ARPA-H. (Photo by SAUL LOEB/AFP via Getty Images)
AFP via Getty Images…