Archive for the ‘satellites’ category: Page 5

Dec 9, 2018

Chang’e 4 in Pictures: China’s Mission to the Moon’s Far Side

Posted by in category: satellites

China launched its Chang’e 4 mission to the far side of the moon on Dec. 8, 2018 Beijing Time (Dec. 7 EST/GMT). China is the first country ever to send a rover to soft-land on the lunar farside. See the mission photos here! This Image: The Long March 3B rocket carrying Chang’e 4 lifts off from China’s Xichang Satellite Launch Center.

Credit: Jiang Hongjing/Xinhua/Zuma

China’s Chang’e 4 lunar probe lifts off the pad at Xichang Satellite Launch Center on Dec. 7, 2018 (Dec. 8 local Chinese time).

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Dec 7, 2018

Experiments at PPPL show remarkable agreement with satellite sightings

Posted by in categories: mobile phones, particle physics, satellites

As on Earth, so in space. A four-satellite mission that is studying magnetic reconnection—the breaking apart and explosive reconnection of the magnetic field lines in plasma that occurs throughout the universe—has found key aspects of the process in space to be strikingly similar to those found in experiments at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL). The similarities show how the studies complement each other: The laboratory captures important global features of reconnection and the spacecraft documents local key properties as they occur.

The observations made by the Magnetospheric Multiscale Satellite (MMS) mission, which NASA launched in 2015 to study in the magnetic field that surrounds the Earth, correspond quite well with past and present laboratory findings of the Magnetic Reconnection Experiment (MRX) at PPPL. Previous MRX research uncovered the process by which rapid reconnection occurs and identified the amount of magnetic that is converted to particle energy during the process, which gives rise to northern lights, and geomagnetic storms that can disrupt cell phone service, black out power grids and damage orbiting satellites.

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Dec 7, 2018

China mission launches to far side of Moon

Posted by in categories: robotics/AI, satellites

China has launched the first mission to land a robotic craft on the far side of the Moon, Chinese media say.

The Chang’e-4 mission will see a static lander and rover touch down in Von Kármán crater, located on the side of the Moon which never faces Earth.

The payload blasted off atop a Long March 3B rocket from Xichang Satellite Launch Center.

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Dec 7, 2018

Satellites may connect the entire world to the internet

Posted by in categories: business, internet, satellites

But business challenges and technical problems remain.

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Dec 4, 2018

SpaceX is attempting to launch 64 small satellites into orbit

Posted by in category: satellites

WATCH LIVE: SpaceX is attempting to launch 64 small satellites into orbit. Launching so many satellites at once is not easy. Each one has to deploy without hitting the rocket or one another.

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Dec 3, 2018

A startup is about to test a ‘gas station in space’ that could one day refuel satellites

Posted by in categories: energy, satellites

Fuel is heavy. And when launching a satellite into space, the amount of fuel you give it determines how long it can stay operational. That is, unless you can refuel at a space gas station.

The news: Startup Orbit Fab is scheduled to launch an experiment to the International Space Station on board a SpaceX Dragon cargo mission tomorrow at 1:38pm EST. Its goal is to test the company’s method of fluid transfer in space. It’ll be launched alongside other scientific experiments to be performed by astronauts on board the station in collaboration with the ISS US National Lab.

The challenge: Refueling and repairing satellites in space requires some expert wrangling, as well as well as the launch of large quantities and types of fuel into orbit. Also, pumping new fuel into a satellite doesn’t work in microgravity the way it does on Earth. Fluids are harder to measure and float around their tanks unpredictably.

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Dec 2, 2018

35 Incredible Images of Earth’s Mountains and Volcanoes From Space

Posted by in category: satellites

Mountains and volcanoes are some of the most fascinating geological formations on Earth — and scientists and adventurers alike can’t get enough of them. Not a lot of us will get a first-hand look at what the planet’s tallest peaks and ranges look like from their summits, but thanks to the photos taken by NASA satellites in orbit and camera-wielding astronauts in space, they are visible as they never would be to the naked eye — hundreds of miles above the Earth.

Click through the slideshow to see stunning images of the Earth’s mountains and volcanoes — from Mount Everest and the Himalayas to the volcanoes of Hawaii and the snow-covered peaks of the Rocky Mountains — captured from space.

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Dec 1, 2018

Watch SpaceX Attempt Its Wickedly Complex Satellite Launch

Posted by in categories: Elon Musk, satellites

With more than 60 satellites jammed in for the ride, a Falcon 9 rocket will get used a third time, fulfilling one of Elon Musk’s standing promises.

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Dec 1, 2018

The Hidden Danger of Cleaning Up Our Space Junk

Posted by in categories: law, policy, satellites, security

As an international relations scholar who studies space law and policy, I have come to realize what most people do not fully appreciate: Dealing with space debris is as much a national security issue as it is a technical one.

Considering the debris circling the Earth as just an obstacle in the path of human missions is naive. As outer space activities are deeply rooted in the geopolitics down on Earth, the hidden challenge posed by the debris is the militarization of space technologies meant to clean it up.

To be clear, space debris poses considerable risks; however, to understand those risks, I should explain what it is and how it is formed. The term “space debris” refers to defunct human-made objects, relics left over from activities dating back to the early days of the space age. Over time that definition has expanded to include big and small things like discarded boosters, retired satellites, leftover bits and pieces from spacecraft, screwdrivers, tools, nuts and bolts, shards, lost gloves, and even flecks of paint.

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Nov 29, 2018

Telesat wins study contract for DARPA’s experimental constellation

Posted by in categories: business, military, satellites

WASHINGTON — The Defense Advanced Research Projects Agency has awarded satellite operator Telesat a contract to study the use of commercial buses in the agency’s experimental low-Earth-orbit constellation program known as Blackjack.

Telesat of Ottawa, Canada, is the third company to receive a study contract for Blackjack, a DARPA demonstration mission that envisions deploying 20 satellites — each carrying one or more payloads. DARPA’s goal is to find lower cost alternatives to traditional military satellites. DARPA aims to pay no more than $6 million per satellite, including launch. European satellite manufacturer Airbus Defence and Space and small satellite manufacturer Blue Canyon Technologies of Boulder, Colorado, received similar contracts over the past four weeks.

Telesat’s contract, which the company announced Nov. 27, is a 12-month study to assess the utility of Telesat buses as the company refines its plans for a constellation of roughly 300 small, broadband satellites. Telesat has yet to select a manufacturer for its satellites. Two contenders, Airbus Defence and Space and a team formed by Thales Alenia Space and Maxar Technologies, are competing to build an unspecified number of satellites. Michael Schwartz, Telesat’s senior vice president of corporate and business development said the company still plans to down select a manufacturer in the spring.

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