Archive for the ‘satellites’ category: Page 3

Jun 13, 2019

SpaceX Returns To Business As Usual With Launch Of Canadian Satellites

Posted by in categories: business, satellites

SpaceX has successfully launched a rocket carrying three Canadian satellites into orbit, the company’s seventh launch of the year.

At 7.17 A.M. Pacific time today, SpaceX’s Falcon 9 rocket lifted off from the Vandenberg Air Force Base in California. About eight minutes after launch, the first stage of the booster touched down at the company’s Landing Zone 4 near the launch site – only the second ever landing here.

This was also the second time this booster had launched, having gone to space previously on the historic first uncrewed demonstration mission of the Crew Dragon spacecraft in March this year. That mission launched from Cape Canaveral in Florida, whereas this was SpaceX’s 15th ever launch from Vandenberg of their 79 total launches.

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Jun 13, 2019

SpaceX Falcon 9 bids temporary goodbye to West Coast in launch & landing photos

Posted by in category: satellites

SpaceX has completed its last California Falcon 9 launch of 2019 and the company’s official pictures of the mission are unexpectedly spectacular considering the near-zero visibility incurred by coastal fog.

Lifting off on June 12th, Falcon 9 successfully delivered the Canadian Space Agency’s Radarsat Constellation Mission (RCM) – likely weighing ~5000 kg (11,000 lb) – to a 600 km (370 mi) sun-synchronous orbit (SSO). Made up of three separate Earth observation satellites, RCM has a combined value greater than $1 billion and has thus become the single most expensive payload – perhaps by as much as a factor of two – SpaceX has ever launched. Although disappointing, RCM made for a spectacular temporary finale to SpaceX’s West Coast launch activity, likely the company’s last Vandenberg Air Force Base (VAFB) mission for at least 6–9 months.

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Jun 11, 2019

Used SpaceX Rocket Launching 3 Satellites Wednesday: How to Watch Live

Posted by in category: satellites

The RCM mission will lift off at 10:17 a.m. EDT from California’s Vandenberg Air Force Base.

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Jun 11, 2019

NASA details Deep Space Atomic Clock and other tests launching on SpaceX Falcon Heavy

Posted by in categories: materials, satellites

SpaceX’s next mission for its Falcon Heavy high-capacity rocket is set for June 24, when it’ll take off from NASA’s Kennedy Space Center in Florida with 20 satellites on board that comprise the Department of Defense’s Space Test Program-2. That’s not all it’ll carry however: There also will be cargo pertaining to four NASA missions aboard the private launch vehicle, including materials that will support the Deep Space Atomic Clock, the Green Propellant Infusion Mission and two payloads that will serve scientific missions.

NASA detailed all of these missions in a press conference today, going into more detail about what each will involve and why NASA is even pursuing this research to begin with.

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Jun 10, 2019

Swarm of 105 tiny Sprite ChipSats successfully deployed

Posted by in category: satellites

If you thought SpaceX launching 60 Starlink satellites at once was impressive, Cornell University has managed 105 small satellites. The ChipSats, called Sprites, forming a swarm of cracker-sized nanosatellites were deployed from the Kicksat-2 CubeSat on March 18, 2019 at an altitude of 300 km (186 mi) and contact was established by Stanford University and NASA Ames engineers the next day by a Cornell satellite ground station.

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Jun 9, 2019

Heart of next-generation chip-scale atomic clock

Posted by in categories: computing, particle physics, satellites

Physicists at the National Institute of Standards and Technology (NIST) and partners have demonstrated an experimental, next-generation atomic clock — ticking at high “optical” frequencies — that is much smaller than usual, made of just three small chips plus supporting electronics and optics.

Described in Optica, the chip-scale clock is based on the vibrations, or “ticks,” of rubidium atoms confined in a tiny glass container, called a vapor cell, on a chip. Two frequency combs on chips act like gears to link the atoms’ high-frequency optical ticks to a lower, widely used microwave frequency that can be used in applications.

The chip-based heart of the new clock requires very little power (just 275 milliwatts) and, with additional technology advances, could potentially be made small enough to be handheld. Chip-scale optical clocks like this could eventually replace traditional oscillators in applications such as navigation systems and telecommunications networks and serve as backup clocks on satellites.

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Jun 8, 2019

SpaceX SNUB: Royal Astronomical Society ‘concerned’ by Starlink constellation

Posted by in categories: Elon Musk, satellites

SPACEX STARLINK is Elon Musk’s mission to bring broadband around the world. However the Royal Astronomical Society has now voiced concern over the controversial satellite constellation.

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May 28, 2019

SpaceX Starlink Satellite Simulations

Posted by in category: satellites

Mark Handley (UCL, University College London) has simulation showing the orbits of various SpaceX Starlink satellite constellations. There are simulations of 72, 264 and 11927 satellites. SpaceX is launching 60 satellites at a time. SpaceX has 60 production Starlink satellites in orbit now for testing.

SpaceX plans six more launches of Starlink satellites by the end of the year and should have enough for an initial 720 satellites for North America, Europe and Asia service by March or April 2020.

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May 28, 2019

SpaceX’s bright Starlink satellites are upsetting astronomers

Posted by in categories: internet, satellites

SpaceX launched 60 internet satellites last week and their bright appearance has caused concern amongst astronomers, who say plans for 12,000 of them could ruin the night sky.

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May 25, 2019

An astronomer in the Netherlands captured stunning video of 60 Starlink satellites zooming across the sky

Posted by in category: satellites

A stunning video shot by a Dutch astronomer captured a string of roughly 60 Starlink satellites zooming across the night sky, one day after they were launched into orbit.

The video shows the “train” of satellites speeding in a straight line as they orbit around the earth.

The astronomer, Marco Langbroek, wrote in a blog post that he had calculated the search orbit himself to find out when they would pass by, and “stood ready” with his camera. The train zoomed by within three minutes of his predicted time.

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