A revolutionary alternative to conventional rockets that uses controlled explosions has completed its first long-duration engine test as part of Venus Aerospace's partnership with DARPA to develop a Rotating Detonation Rocket Engine (RDRE).

A group of astronauts are trapped in orbit around the Earth after their space ship suffers catastrophic damage. A rescue ship is available to bring them home, but there is a catch. It has only four seats ― and there are seven of them.

Over the years, we have become incredibly good at making telescopes. Just look at the 6.5 m (21 ft 4 inch) wide James Webb Space Telescope or the aging but still great 4.5 m (14 ft) wide Hubble Space Telescope. These powerful apparatuses help us peer deep into the cosmos and unravel some of the universe's most profound mysteries.

A newly launched satellite aims to measure how Earth's rotation drags the fabric of space-time around itself - an effect of Einstein's general theory of relativity - ten times more accurately than ever before. The Laser Relativity Satellite 2 (LARES-2) launched from the European Space Agency (ESA) spaceport in Kourou, French Guiana, on 13 July.

By MARCIA DUNN, AP Aerospace Writer CAPE CANAVERAL, Fla. (AP) - A NASA spacecraft has officially "touched" the sun, plunging through the unexplored solar atmosphere known as the corona. Scientists announced the news Tuesday during a meeting of the American Geophysical Union.

The Facebook account appearing to belong to the woman who was charged alongside her Navy nuclear engineer husband with selling secret information about nuclear submarines to an undercover FBI agent is filled with liberal talking points on the Black Lives Matter movement and feminism.

image-51]Data from satellite sensors show that during the Northern Hemisphere's growing season, the Midwest region of the United States boasts more photosynthetic activity than any other spot on Earth, according to NASA and university scientists. Healthy plants convert light to energy via photosynthesis, but chlorophyll also emits a fraction of absorbed light as fluorescent glow that is invisible to the naked eye.

KB: We asked ourselves, "what obliquity, what misalignment would Planet Nine induce in the solar system?" because it must induce some. We know that Planet Nine's orbit in inclined. As a result, when Planet Nine torques the rest of the solar system, the two sort of act as two precessing tops.