A new feature on Google search and Maps will give users near-real-time information on wildfires in the US. Data from NOAA satellites allows Google to update wildfire boundaries on its maps hourly.
Category: satellites – Page 129
SpaceX launched and landed a Falcon 9 rocket on a record-breaking sixth flight
On August 18th, SpaceX launched a Falcon 9 rocket on its sixth mission to space, breaking the company’s record for reflights of a single booster. The rocket launched 58 of SpaceX’s internet-beaming Starlink satellites and three hitchhiking satellites from Planet.
NASA Is Tracking a Vast, Growing Anomaly in Earth’s Magnetic Field
NASA is actively monitoring a strange anomaly in Earth’s magnetic field: a giant region of lower magnetic intensity in the skies above the planet, stretching out between South America and southwest Africa.
This vast, developing phenomenon, called the South Atlantic Anomaly, has intrigued and concerned scientists for years, and perhaps none more so than NASA researchers. The space agency’s satellites and spacecraft are particularly vulnerable to the weakened magnetic field strength within the anomaly, and the resulting exposure to charged particles from the Sun.
The South Atlantic Anomaly (SAA) – likened by NASA to a ‘dent’ in Earth’s magnetic field, or a kind of ‘pothole in space’ – generally doesn’t affect life on Earth, but the same can’t be said for orbital spacecraft (including the International Space Station), which pass directly through the anomaly as they loop around the planet at low-Earth orbit altitudes.
SpaceX launches its Falcon 9 rocket for its 11th Starlink mission, which will include 58 Starlink satellites and three of Planet’s SkySats
Lift-off from the site in the US state of Florida is scheduled for 1431GMT.
Source: SpaceX/AP
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New tool helps interpret future searches for life on exoplanets
Is there life on a distant planet? One way astronomers are trying to find out is by analyzing the light that is scattered off a planet’s atmosphere. Some of that light, which originates from the stars it orbits, has interacted with its atmosphere, and provides important clues to the gases it contains. If gases like oxygen, methane or ozone are detected, that could indicate the presence of living organisms. Such gases are known as biosignatures. A team of scientists from EPFL and Tor Vergata University of Rome has developed a statistical model that can help astronomers interpret the results of the search for these “signs of life.” Their research has just been published in Proceedings of the National Academy of Sciences (PNAS).
Since the first exoplanet—a planet that orbits a star other than the sun—was discovered 25 years ago, over 4,300 more have been identified. And the list is still growing: a new one is discovered every two or three days. Around 200 of the exoplanets found so far are telluric, meaning they consist mainly of rocks, like the Earth. While that’s not the only requirement for a planet to be able to host life—it also needs to have water and be a certain distance from its sun—it is one criterion that astronomers are using to focus their search.
In the coming years, the use of gas spectroscopy to detect biosignatures in planets’ atmospheres will become an increasingly important element of astronomy. Many research programs are already under way in this area, such as for the CHEOPS exoplanet-hunting satellite, which went into orbit in December 2019, and the James-Webb optical telescope, scheduled to be launched in October 2021.
Ariane 5 rocket launches robotic space tug into orbit alongside 2 communications satellites
A new space tug, only the second-ever to extend the life of older satellites, launched into orbit Saturday on a European rocket after weeks of delays due to weather and rocket checks.
An Arianespace Ariane 5 rocket hefted the Mission Extension Vehicle-2 (MEV-2) into space Sunday (July 31), putting the vehicle en route to an Intelsat satellite waiting for a boost into a higher orbit. Riding along on the rocket were two satellites for broadband communications.
Chinese Scientists Figured Out How to Beam Quantum Messages From Satellites
Safe Messaging
Cybersecurity experts have long warned that quantum computers, whenever it is that they become useful, will render useless most conventional forms of encryption. This new satellite experiment, which is described in research published in the journal Nature, suggests that it may be possible to send secure messages yet.
“A remarkable feature of the entanglement-based quantum cryptography as we demonstrated here is that such security is ensured even if the satellite is controlled by an adversary,” University of Science and Technology physicist Jian-Wei Pan told Space.com.
SpaceX, ULA win huge defense contracts totaling more than $650 million
The Space Force’s announcement last week that United Launch Alliance and SpaceX will launch expensive spy satellites and other military payloads brings a long and often fierce battle for government funds to an end — at least for now.
Why it matters: This type of government money — particularly in light of the economic downturn caused by the coronavirus pandemic — is key for space companies that often work on thin margins.
The state of play: ULA was awarded the bulk of the funds — $337 million — for two missions due to launch in 2022, with SpaceX winning $316 million for one mission launching that year.
SpaceX is manufacturing 120 Starlink internet satellites per month
SpaceX is manufacturing its Starlink satellites at an unprecedented rate for the space industry, analysts say, as the company dives headlong into building a space-based global internet service.
Elon Musk’s company told the Federal Communications Commission in a presentation last month that its Starlink unit is “now building 120 satellites per month” and has “invested over $70 million developing and producing thousands of consumer user terminals per month.”
“Invested hundreds of millions of dollars in Starlink to date,” the SpaceX presentation added.