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Archive for the ‘satellites’ category: Page 147

Jun 27, 2018

The rockets that are pushing the boundaries of space travel

Posted by in category: satellites

Friday morning at 5:24 am (0924 GMT), a rocket owned by the US company SpaceX will blast off from Florida carrying two and a half tons of gear from NASA, only to dock three days later and 250 miles (400 kilometers) above Earth at the International Space Station.

The itself is not new. It launched a NASA satellite into orbit two months ago, then landed back on Earth—upright—on a barge in the Atlantic Ocean off Cape Canaveral.

Even the Dragon capsule, carrying the cargo and affixed to the top of the rocket was used before, having flown a mission to the ISS in 2016.

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Jun 23, 2018

This floating robotic factory will build satellites and spaceships in orbit

Posted by in categories: 3D printing, robotics/AI, satellites

The Archinaut, a system made of 3D printers and robotic arms, could be the flying factory humans need to colonize space.

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Jun 21, 2018

Air Force certifies Falcon Heavy, orders satellite launch for 2020

Posted by in category: satellites

I want to thank the Air Force for certifying Falcon Heavy.

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Jun 18, 2018

Aevum’s New Rocket-Drone Airplane Duo Could Launch Satellites Every 3 Hours

Posted by in categories: drones, robotics/AI, satellites

A space launch every 3 hours may soon be possible using rockets carried on a fully autonomous unmanned airplane, a new startup company suggests.

Alabama-based startup Aevum aims to per mission, using an air-launch system called Ravn.

“Ravn is designed to launch every 180 minutes,” Jay Skylus, Aevum’s CEO and chief launch architect, told Space.com. “Other launch vehicles fly only a handful of times a year with an average of 18 months of lead time.” [Rocket Launches: The Latest Liftoffs, Photos & Videos].

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Jun 15, 2018

Chinese satellite snags new views of Earth from lunar orbit

Posted by in categories: habitats, satellites

On May 20, China launched Queqiao, a lunar communications relay satellite for the upcoming Chang’e 4 lander and rover mission. On the way out to the Moon, it dropped off a pair of small satellites bound for lunar orbit called Longjiang-1 and Longjiang-2. The satellites weigh just 45 kilograms each and measure 50-by-50-by-40 centimeters. Their purpose is testing out future radio astronomy and interferometry techniques, and one also has a camera built by Saudi Arabia.

Unfortunately, Longjiang-1 had a problem and didn’t make it into lunar orbit. Longjiang-2, however, was successful, and sent home a few pictures! Check them out:

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Jun 11, 2018

In-orbit services poised to become big business

Posted by in categories: business, government, robotics/AI, satellites

A transition is happening in the satellite business. Fast-moving technology and evolving customer demands are driving operators to rethink major investments in new satellites and consider other options such as squeezing a few more years of service out of their current platforms.

Which makes this an opportune moment for the arrival of in-orbit servicing.

Sometime in early 2019, the first commercial servicing spacecraft is scheduled to launch. The Mission Extension Vehicle built by Orbital ATK on behalf of subsidiary SpaceLogistics, will the first of several such robotic craft that are poised to compete for a share of about $3 billion worth of in-orbit services that satellite operators and government agencies are projected to buy over the coming decade.

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Jun 10, 2018

20 Years of Earth Data Now at Your Fingertips

Posted by in category: satellites

Powerful Earth-observing instruments aboard NASA’s Terra and Aqua satellites, launched in 1999 and 2002, respectively, have observed nearly two decades of planetary change. Now, for the first time, all that imagery — from the first operational image to imagery acquired today — is available for exploration in Worldview.

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Jun 1, 2018

Engineers design new solid polymer electrolyte, paving way for safer, smaller batteries and fuel cells

Posted by in categories: energy, satellites

Fuel cells and batteries provide electricity by generating and coaxing positively charged ions from a positive to a negative terminal which frees negatively charged electrons to power cellphones, cars, satellites, or whatever else they are connected to. A critical part of these devices is the barrier between these terminals, which must be separated for electricity to flow.

Improvements to that barrier, known as an electrolyte, are needed to make energy storage devices thinner, more efficient, safer, and faster to recharge. Commonly used liquid electrolytes are bulky and prone to shorts, and can present a fire or explosion risk if they’re punctured.

Research led by University of Pennsylvania engineers suggests a different way forward: a new and versatile kind of (SPE) that has twice the proton conductivity of the current state-of-the-art material. Such SPEs are currently found in proton-exchange membrane fuel cells, but the researchers’ new design could also be adapted to work for the lithium-ion or sodium-ion batteries found in consumer electronics.

Continue reading “Engineers design new solid polymer electrolyte, paving way for safer, smaller batteries and fuel cells” »

May 31, 2018

A Forgotten Element Could Help Us Redefine The Way We Measure Time

Posted by in categories: particle physics, quantum physics, satellites

A rare earth element that doesn’t get much mention could become the key to upgrading atomic clocks to become even more accurate. This could help us explore space and track satellites, and even keep the world’s time zones in sync.

Atomic clocks use the oscillations of atoms under laser fire as a measurement of time, in the same way a grandfather clock uses the swing of a pendulum. They can lose less than a second over 50 million years, depending on the elements used — but scientists want even greater accuracy.

That’s where lutetium (Lu) comes in. It offers both a higher level of stability and a higher degree of precision than the caesium or rubidium of today’s atomic clocks, according to a team of researchers from the Centre for Quantum Technologies (CQT) in Singapore.

Continue reading “A Forgotten Element Could Help Us Redefine The Way We Measure Time” »

May 26, 2018

SpaceX’s prototype internet satellites are good enough for gaming, Elon Musk says

Posted by in categories: Elon Musk, internet, satellites

In a tweet, SpaceX CEO Elon Musk says two prototype broadband data-transmitting satellites are working well enough to be used for playing video games.

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