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Let us know if there is a problem with our content. Your message to the editors. Your email only if you want to be contacted back. Send Feedback. Thank you for taking time to provide your feedback to the editors. E-mail the story Next-generation of GPS satellites are headed to space.
Your friend's email. Your email. I would like to subscribe to Science X Newsletter. Learn more. Your name. By as many as 1, satellites could be launching each year—up from in And they work better in groups. Starlink is one of several projects aiming to create low-cost, high-speed global satellite internet that can compete with terrestrial networks while connecting far-flung rural communities.
The satellites will be deployed at three different altitudes within low Earth orbit. New machines sitting over the equator in geostationary orbit are pushing forecasts to the next level. In , the GOES-R satellite program started monitoring clouds and water vapor using reflected solar radiation. This is different from ground-based radar methods, which send signals into the sky and analyze the returns. Using onboard instruments like the Geostationary Lightning Mapper and the Advanced Baseline Imager, which collects images in 16 channels of visible, near-infrared, and infrared light, the satellites have already improved forecast lead times.
While many constellations of small satellites are in the works, startup Planet Labs has one already up and running. The Doves, which have a life span of two to three years, are cubesats — small, boxy satellites weighing a few kilograms each that can be packed into a rocket and launched in batches.
In , the company set a record for the largest one-time deployment when it sent 88 Doves into orbit. GPS has been around since the s in military applications. Now it helps do everything from guiding tractors in fields to locating your nearest coffee shop.
The GPS III satellites are the newest and best version: Lockheed Martin claims they are three times more accurate, and more resistant to malicious or accidental jamming. They can also collaborate with other positioning satellites to help give users better reception inside buildings and under tree cover. A new simulation shows that when the DART mission hits the target asteroid, it could send it spinning and wobbling in a dramatic way.
The Decadal Survey, expected at the end of September, sets the tone for a new era of space exploration. One team of researchers wants the survey to use AI to forecast growing science fields.
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