Archive for the ‘satellites’ category: Page 97

Jan 15, 2021

NASA Advancing Global Navigation Satellite System Capabilities

Posted by in category: satellites

NASA is developing capabilities that will allow missions at high altitudes to take advantage of signals from Global Navigation Satellite System (GNSS) constellations — like GPS commonly used in the U.S.

Jan 14, 2021

SpaceX wins contracts for lunar lander, environmental satellite launches

Posted by in category: satellites

WASHINGTON — SpaceX secured contracts Jan. 13 for the launches of a commercial lunar lander mission backed by NASA as well as a privately funded satellite to track methane emissions.

Intuitive Machines announced that it selected SpaceX for the launch of its IM-2 lunar lander mission on a Falcon 9 rocket no earlier than 2022. IM-2 will land in the south polar region of the moon carrying payloads arranged through the agency’s Commercial Lunar Payload Services (CLPS) program in October.

The IM-2 mission will fly a drilling experiment called Polar Resources Ice Mining Experiment 1 (PRIME-1), which will look for water ice below the lunar surface. Intuitive Machines said that, besides the PRIME-1 drill, two other NASA technology payloads will fly on the lander.

Jan 13, 2021

Half of America is Ready to Switch to Starlink Satellite Internet

Posted by in categories: internet, satellites

How true Eric Klien.

Only 5% of internet users currently connect via satellite in the US. But that number could jump significantly when SpaceX’s service finally gets off the ground, according to a new survey.

Jan 13, 2021

New Horizons spacecraft answers the question: How dark is space?

Posted by in category: satellites

How dark is the sky, and what does that tell us about the number of galaxies in the visible universe? Astronomers can estimate the total number of galaxies by counting everything visible in a Hubble deep field and then multiplying them by the total area of the sky. But other galaxies are too faint and distant to directly detect. Yet while we can’t count them, their light suffuses space with a feeble glow.

To measure that glow, astronomical satellites have to escape the inner solar system and its light pollution, caused by sunlight reflecting off dust. A team of scientists has used observations by NASA’s New Horizons mission to Pluto and the Kuiper Belt to determine the brightness of this cosmic optical background. Their result sets an upper limit to the abundance of faint, unresolved , showing that they only number in the hundreds of billions, not 2 trillion galaxies as previously believed.

How dark does space get? If you get away from city lights and look up, the sky between the stars appears very dark indeed. Above the Earth’s atmosphere outer space dims even further, fading to an inky pitch-black. And yet even there, space isn’t absolutely black. The universe has a suffused feeble glimmer from innumerable distant stars and galaxies.

Jan 12, 2021

Jupiter Mission

Posted by in categories: particle physics, satellites

China has hinted before that it would like to send missions to the outer planets. Chinese scientists, working with European collaborators, are now solidifying plans for two distinct Jupiter mission concepts, one of which will likely move forward. Both seek to unravel mysteries behind the planet’s origins and workings using a main spacecraft and one or more smaller vehicles.

The competing missions are called the Jupiter Callisto Orbiter and the Jupiter System Observer, or JCO and JSO, respectively. Both would launch in 2029 and arrive in 2035 after one Venus flyby and two Earth flybys. JCO and JSO would study the size, mass, and composition of Jupiter’s irregular satellites—those captured by Jupiter rather than formed in orbit, and often in distant, elliptical and even retrograde orbits—complementing science conducted by NASA’s Europa Clipper and Lucy missions, as well as the European Space Agency’s JUICE mission.

Both JCO and JSO would possibly include CubeSats with particle and field detector payloads to perform the first multi-point study of Jupiter’s magnetic field.

Jan 11, 2021

NASA says puzzling new space drive can generate thrust without propellant

Posted by in categories: energy, satellites

Circa 2014

A NASA study has recently concluded that the “Cannae Drive,” a disruptive new method of space propulsion, can produce small amounts of thrust without the use of propellant, in apparent discordance with Newton’s third law. According to its inventor, the device can harness microwave radiation inside a resonator, turning electricity into a net thrust. If further verified and perfected, the advance could revolutionize the space industry, dramatically cutting costs for both missions in deep space and satellites in Earth orbit.

The basic principle behind space propulsion is very simple: for every action, there is an equal and opposite reaction. Use a rocket engine to throw mass one way, get propelled the other way. And according to the law of conservation of momentum, the more mass you throw behind you and the faster you throw it, the stronger your forward thrust will be.

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Jan 11, 2021

China to begin construction of space station this year

Posted by in category: satellites


The core section of China’s space station is scheduled to launch in the next several months, the first of 11 missions carrying lab elements, cargo, and astronauts to the fledgling outpost over the next two years, according to Chinese space program officials.

The launch of the first element of the Chinese station is one of more than 40 missions scheduled this year by China Aerospace Science and Technology Corp., or CASC, China’s largest state-owned aerospace contractor.

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Jan 10, 2021

FCC grants permission for polar launch of Starlink satellites

Posted by in categories: internet, satellites

WASHINGTON — The Federal Communications Commission will allow SpaceX to launch 10 Starlink satellites into polar orbit on an upcoming mission, but deferred a decision on a much broader modification of SpaceX’s license.

In an order published Jan. 8, the FCC granted SpaceX permission to launch 10 Starlink satellites into a 560-kilometer orbit with an inclination of 97.6 degrees. Those satellites will launch on a Falcon 9 no earlier than Jan. 14 as part of Transporter-1, a dedicated smallsat rideshare mission.

SpaceX had been lobbying the FCC for weeks for permission to launch Starlink satellites into a polar orbital plane as the FCC considers a modification of the company’s license to lower the orbits of satellites originally authorized for higher altitudes. That included a Nov. 17 request to launch 58 satellites into a single polar orbital plane, citing “an opportunity for a polar launch in December” that it did not identify.

Jan 10, 2021

MIT Deep-Learning Algorithm Finds Hidden Warning Signals in Measurements Collected Over Time

Posted by in categories: biotech/medical, information science, robotics/AI, satellites

A new deep-learning algorithm could provide advanced notice when systems — from satellites to data centers — are falling out of whack.

When you’re responsible for a multimillion-dollar satellite hurtling through space at thousands of miles per hour, you want to be sure it’s running smoothly. And time series can help.

A time series is simply a record of a measurement taken repeatedly over time. It can keep track of a system’s long-term trends and short-term blips. Examples include the infamous Covid-19 curve of new daily cases and the Keeling curve that has tracked atmospheric carbon dioxide concentrations since 1958. In the age of big data, “time series are collected all over the place, from satellites to turbines,” says Kalyan Veeramachaneni. “All that machinery has sensors that collect these time series about how they’re functioning.”

Jan 8, 2021

Brett Vaughan — U.S. Navy Chief AI Officer and AI Portfolio Manager, Office of Naval Research

Posted by in categories: government, military, robotics/AI, satellites, surveillance

U.S. Navy Chief Artificial Intelligence Officer, and AI Portfolio Manager, Office of Naval Research.

Brett Vaughan is the U.S. Navy Chief Artificial Intelligence (AI) Officer and AI Portfolio Manager at the Office of Naval Research (ONR).

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