SpaceX is a remarkable firm. It was founded in 2002, to further Mr Musk's dream of colonising Mars. It is a case study in disruption—a startup with no track record has humbled incumbents like Boeing and Lockheed Martin. Its rockets cost half as much as its rivals' do, thanks in part to their ability to land their first stages for reuse rather than dumping them in the sea in line with standard industry practice.
The world has been here before. Iridium announced similar plans in the late 1990s with gales of hype: the first call on its network was between Al Gore, then America's vice-president, and a distant descendant of Alexander Graham Bell. Nine months later the firm went bust, swamped by the upfront capital costs of launching satellites. LeoSat, a firm based in Luxembourg, was founded in 2013. It shut down last year for lack of investor interest.
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Planet Nine and the search for primordial black holes orbiting solar system
ASA Space Station On-Orbit Status 9 July, 2020 - Studying Water Conservation - SpaceRef
The International Space Station was orbiting almost directly above Marfa, Texas, on a southeastern orbital trek that would take it over Mexico and across South America. In the foreground, is the "Dextre" fine-tuned robotic hand with Japan's H-II Transfer Vehicle-9 (HTV-9) behind it. Inside the HTV-9, is the HTV-8 pallet holding old nickel-hydrogen batteries removed from the station during previous spacewalks. Credit: NASA. (June 30, 2020)
The International Space Station was a hive of activity today with the Expedition 63 crew practicing emergency skills, examining eyes and studying water conservation.
Explained: Comet C/2020 F3 Neowise, one of the brightest comets in decades passing Earth |
The recently discovered comet called C/2020 F3, also known as NEOWISE after the NASA telescope that discovered it, will make its closest approach to the Earth on July 22. On the day, the comet, which takes 6,800 years to complete one lap around its orbit, will be at a distance of 64 million miles or 103 million kilometers while crossing Earth's outside orbit.
On July 3, the comet was closest to the sun at 43 million km. On this day, the comet cruised inside Mercury's orbit and, due to its proximity to the sun, its outer layer was released creating an atmosphere – referred to as coma – of gas and dust from its icy surface.
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SpaceX to launch South Korean communications satellite into orbit on Tuesday
A Falcon 9 rocket will bring an Anasis 2 into orbit. This is a communications satellite for the South Korean military.
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MORE NEWS: Tracking Coronavirus: Florida cases exceed 250,000; COVID-19 cases surge nationwide
The tech behind Virgin Orbit's mission to space - BBC News
Virgin Orbit plans to launch its rockets from a plane. This new approach means no need for a launch site or the need to burn masses of fuel to get the rockets off the ground.
Scienceline's Guide to the Exoplanets: Transmission Target | Scienceline
Transmission Target
Luyten b
Discovered by: High Accuracy Radial-velocity Planet Searcher
Discovered: 2017
Distance from Earth: ~12 light-years
Mass: ~3 Earth masses
Radius: ~1.35 Earth radii
Surface climate: Promising.
Habitability for humans: Promising…
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Luyten b, also known as GJ273b, is again one of the closest known exoplanets to Earth. And just like so many other planets we've talked about, Luyten b orbits a red dwarf quite closely. In its case, Luyten b moves about eight million miles, or 13 million kilometers, from Luyten's Star, a relatively cool star around a quarter the mass of the Sun.
35 Years Ago, a U.S. F-15 Blasted an Orbiting Satellite to Smithereens
One of the most remarkable feats of military engineering during the Cold War was the shootdown of an actual satellite by a fighter jet. The incident was the first and only use of the AGM-135 anti-satellite (ASAT) weapon. Although anti-satellite weapon development slowed after the end of the Cold War, it's restarted in a big way, with new weapons being fielded by the U.S., Russia, and China.
Task & Purpose published an interview with Major General Wilbert "Doug" Pearson Jr., U.S. Air Force, retired. In addition to receiving the high rank of major general Pearson is the only pilot on Earth known to have shot down a satellite in orbit. Pearson accomplished this on September 13th, 1985, in the skies over the Pacific Ocean off the coast of California.
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