Archive for the ‘satellites’ category: Page 4

Jul 29, 2022

Satellites can disappear in major solar storms and it could take weeks to find them

Posted by in category: satellites

The risk of satellite collisions would be extremely high after a major solar storm, experts say.

Jul 29, 2022

Scientists calculate the risk of someone being killed by space junk

Posted by in categories: particle physics, satellites

The chance of someone being killed by space junk falling from the sky may seem ridiculously tiny. After all, nobody has yet died from such an accident, though there have been instances of injury and damage to property. But given that we are launching an increasing number of satellites, rockets, and probes into space, do we need to start taking the risk more seriously?

A new study, published in Nature Astronomy, has estimated the chance of causalities from falling rocket parts over the next ten years.

Every minute of every day, debris rains down on us from space – a hazard we are almost completely unaware of. The microscopic particles from asteroids and comets patter down through the atmosphere to settle unnoticed on the Earth’s surface – adding up to around 40,000 tonnes of dust each year.

Jul 28, 2022

DoD signaling demand for satellite support services in geostationary orbit

Posted by in categories: computing, military, mobile phones, satellites

WASHINGTON — The Defense Innovation Unit is funding space projects that the agency hopes will spur commercial investments in satellite refueling technologies and support services for geostationary satellites.

“Imagine a world where every 18 to 24 months, you could simply upgrade the processor on a satellite in GEO the way that you upgrade your smartphone to take advantage of new processing power and new functionality,” said Steve “Bucky” Butow, director of the space portfolio at the Defense Innovation Unit.

DIU, based in Silicon Valley, is a Defense Department agency established in 2015 to help bring privately funded innovation into military programs.

Continue reading “DoD signaling demand for satellite support services in geostationary orbit” »

Jul 27, 2022

Researchers 3D print sensors for satellites

Posted by in categories: 3D printing, satellites

Caption :

MIT researchers have demonstrated a 3D-printed plasma sensor for orbiting spacecraft that works just as well as much more expensive, semiconductor sensors. These durable, precise sensors could be used effectively on inexpensive, lightweight satellites known as CubeSats, which are commonly utilized for environmental monitoring or weather prediction.

Jul 26, 2022

L3Harris, Northrop picked for $1.3 billion hypersonics tracking satellite project

Posted by in categories: military, satellites

WASHINGTON — L3Harris Technologies and Northrop Grumman Strategic Space Systems won a U.S. Department of Defense contract to furnish multimillion-dollar satellites that help detect, identify and target missiles and other cutting-edge threats, including hypersonics.

The Space Development Agency on July 18 said the companies will each produce 14 prototype satellites for the Tranche 1 Tracking Layer, a key component of the National Defense Space Architecture, which will consist of hundreds of satellites operating primarily in low-Earth orbit.

Together, the agreements are valued at more than $1.3 billion. The L3Harris deal came in at $700 million, making each satellite and related service package worth roughly $50 million. The Northrop Grumman deal came in at $617 million.

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Jul 26, 2022

European satellite firms eye tie-up to create ‘global champion’

Posted by in categories: Elon Musk, internet, satellites

French satellite operator Eutelsat said on Monday it was in talks with British counterpart OneWeb for a tie-up to create a “global champion” in broadband internet, rivaling US services like Elon Musk’s Starlink.

Satellite broadband promises to bring coverage to the most remote areas of the planet by doing away with the need for antennas and other infrastructure.

It will also supply internet on commercial aircraft and to products like connected cars.

Jul 24, 2022

France’s Eutelsat close to deal for UK satellite operator OneWeb —sources

Posted by in categories: Elon Musk, internet, satellites

LONDON/PARIS, July 24 (Reuters) — French satellite company Eutelsat (ETL.PA) is poised to buy British rival OneWeb in a deal that could be announced as early as Monday, two sources close to the negotiations said on Sunday.

OneWeb was valued at $3.4 billion in its most recent funding round, one of the sources said. Eutelsat already has a 23% stake in OneWeb and is its second-biggest shareholder.

The merger of the two companies would strengthen their position in the race to build a constellation of low-orbit satellites, challenging the likes of Elon Musk-owned SpaceX’s Starlink and Amazon.com Inc’s (AMZN.O) Project Kuiper.

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Jul 24, 2022

CERN tech in space: driven satellite has been successfully launched

Posted by in categories: particle physics, satellites

CELESTA, the first CERN-driven satellite, successfully entered orbit during the maiden flight of Europe’s Vega-C launch vehicle. Launched by the European Space Agency from the French Guiana Space Centre (CSG) at 13.13 UTC on 13 July 2022, the satellite deployed smoothly and transmitted its first signals in the afternoon. Weighing one kilogram and measuring 10 centimetres on each of its sides, CELESTA (CERN latchup and radmon experiment student satellite) is a 1U CubeSat designed to study the effects of cosmic radiation on electronics. The satellite carries a Space RadMon, a miniature version of a well-proven radiation monitoring device deployed in CERN’s Large Hadron Collider (LHC). CELESTA has been sent into an Earth orbit of almost 6,000 kilometres. “Right in the middle of the inner Van Allen belt, CELESTA will survey an unusual orbit where radiation levels are at their highest,” explains Markus Brugger, Head of the CERN Experimental Areas group and initiator of both the CHARM and CELESTA projects in the context of the R2E (Radiation to Electronics) initiative. The Space RadMon is a flagship example of how CERN technologies can have applications beyond particle physics experiments. “Based entirely on standardised, ultra-sensitive components selected and calibrated by CERN, and mostly in CERN facilities, the Space RadMon is a lightweight and low-power instrument, ideal for future risk-tolerant space missions,” says Ruben Garcia Alia, R2E project leader. “If CELESTA is successful, the Space RadMon could even be adapted to satellite constellations as a predictive maintenance tool – to anticipate the necessary renewal of satellites.” A radiation model of the CELESTA satellite was also tested in CHARM, a CERN mixed-field facility capable of reproducing, to a large extent, the radiation environment of low Earth orbit. The mission will be an important validation of this capability at the facility. “Capable of testing satellites all at once, rather than component by component, CHARM is a unique installation worldwide, remarkably different from other irradiation test facilities. It offers a simple, low-cost alternative and the possibility to assess system-level effects,” says Salvatore Danzeca, CHARM facility coordinator. The success of this satellite is the result of a fruitful partnership between CERN and the University of Montpellier, which involved many students from both institutions and radiation effect specialists from CERN. CELESTA is based on the CSUM radiation tolerant platform. It will be operated from the CSUM control centre. The European Space Agency provided the launch slot in the framework of its small satellite programme. “On a mission to make space more accessible, CELESTA is an exciting example of how CERN expertise can have a positive impact on the aerospace industry. With this mission, CERN displays its low-cost solutions for measuring radiation and testing satellites against it – thus providing universities, companies and startups with the means to realise their space ambitions,” concludes Enrico Chesta, CERN’s Aerospace and Environmental Applications Coordinator in the Knowledge Transfer group. Further information: Video of the launch More about the aerospace applications.

Jul 21, 2022

Mushrooms could solve a huge problem in outer space

Posted by in categories: materials, satellites

Circa 2021

Mycelium is very light in weight, it naturally floats on water, it can withstand the cold of space where we don’t have to worry about cold welding, and we can add in fine strains of metal material which is used to transmit almost any type of signal. As you can see, there are numerous reasons why mycelium is quite suitable for our satellites in space, on land, and in the air on its way to space.

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Jul 21, 2022

SpaceX’s first Starlink V2 satellites spotted at Starbase

Posted by in categories: Elon Musk, internet, satellites

On Monday, SpaceX was spotted loading some of the first Starlink V2 satellite prototypes into a custom mechanism designed to refill Starship’s magazine-like payload bay.

While it’s not the first time SpaceX has used the dispenser, the photos captured by photographer Kevin Randolph are the first to clearly show real prototypes of the next generation of Starlink satellites. According to CEO Elon Musk, those Starlink Gen2 or V2 satellites will be “at least 5 times better”, “an order of magnitude more capable,” and about four times heavier than current (V1.5) Starlink satellites.

The potential of the new satellite bus design paired with Starship’s massive fairing and lift capacity could dramatically improve the viability and cost-effectiveness of SpaceX’s Starlink constellation. First, though, the company needs to launch and qualify prototypes of the new satellite design and verify that all associated ground support equipment works as expected.

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