Why Rockets Use Stages

NAPA, Calif. – Florida startup Satellite Orbital Access and Removal (SOAR) announced a partnership July 15 with the University of Texas, El Paso, (UTEP) to develop a passive system to capture small space debris. “The consequences of even small objects hitting a satellite can be catastrophic when they’re going 7,000 miles per hour or more,”…

Brain cells continually pull material from the fluid around them, including nutrients, signaling molecules, and fragments of their own outer surfaces. This process, called endocytosis, supports learning, memory, and the routine maintenance of neurons. Penn State researchers have now identified a previously unrecognized structure that may control much of this activity. The structure is a…

The Dark Energy Camera’s newest image features the Corona Australis molecular cloud and its many stellar and gaseous features. The swirls of gas in the new image are reminiscent of Vincent van Gogh’s “The Starry Night.” Corona Australis (CrA) is a dark nebula about 425 light years away. It’s one of the closest star-forming regions…

The science of longevity is an important topic for many researchers: how we might add years to our lifespans, and avoid disease and age-related decline at the same time. There are a multitude of angles to approach the topic from too, whether it’s the genetics we’re born with or the food we eat along life’s…

Your editorial (The Guardian view on gene-edited humans: darker uses must be acknowledged alongside medical ones, 5 July) offers welcome support to those expressing concern about the lack of public dialogue on gene-edited humans. These concerns are exacerbated when some scientists view the use of germline editing to eradicate hereditary conditions as inevitable. The new polling…

Anthony Fauci, perhaps the most well-known public health figure in America, has contacted covid-19. Health officials said Wednesday afternoon that the 81-year-old Fauci tested positive for the coronavirus, reportedly for the first time. He’s said to be experiencing mild symptoms currently. Fauci is the long-time director of the National Institute of Allergy and Infectious Diseases…