Sunday, August 23, 2020

How Earth-orbiting satellites are tracking the 2020 hurricane season | Space

While humans on Earth prepare for hurricane season , satellites in orbit are making their own preparations.

"We were predicting an above average hurricane season," in terms of the number of named storms, Jim Yoe, a scientist with the National Oceanic and Atmospheric Administration's (NOAA) National Weather Service, told Space.com.

It looks as though there is "an extremely high probability of having an active season," Yoe said. "The stage has really [been] set for having a lot of hurricanes for this year." In fact, he added, NOAA is currently "looking at two and possibly three little pre-storms out in the Atlantic basin, so you know that the season's getting kicking."

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Publisher: Space.com
Date: 2020-08-20T15:36:04 00:00
Author: https www facebook com spacecom
Twitter: @SPACEdotcom
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Other things to check out:

Planet found orbiting small, cool star -- ScienceDaily

Using the supersharp radio "vision" of the National Science Foundation's continent-wide Very Long Baseline Array (VLBA), astronomers have discovered a Saturn-sized planet closely orbiting a small, cool star 35 light-years from Earth. This is the first discovery of an extrasolar planet with a radio telescope using a technique that requires extremely precise measurements of a star's position in the sky, and only the second planet discovery for that technique and for radio telescopes.

Publisher: ScienceDaily
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Rogue Planets That Float in Space Without Orbiting a Sun Could Outnumber the Stars

Artist’s conception of SIMP J01365663+0933473, a planetary-mass object beyond our Solar System. The object, about a dozen times more massive than Jupiter is traveling through space unaccompanied by any parent star.. Credit: Chuck Carter, NRAO/AUI/NSF

An upcoming NASA mission could find that there are more rogue planets — planets that float in space without orbiting a sun — than there are stars in the Milky Way, a new study theorizes.

Publisher: SciTechDaily
Date: 2020-08-21T08:00:23-07:00
Author: Mike O
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India's Chandrayaan-2 moon mission hits 1-year mark in lunar orbit | Space

India's Chandrayaan-2 lunar orbiter has finished one year and 4,400 trips around the moon — and the spacecraft is just getting started, Indian space agency officials said Thursday (Aug. 20).

"The spacecraft is healthy and performance of subsystems are normal," the Indian Space Research Organisation (ISRO) announced in a statement Thursday . "There is adequate onboard fuel to remain operational for about seven years."

The ambitious spacecraft has been busy since arriving in lunar orbit on Aug. 20, 2019. First, Chandrayaan-2 attempted to deploy the first Indian-led lunar lander, called Vikram. While that lander failed to touch down safely , the lessons learned from the attempt will inform the design of upcoming missions, ISRO has said. Meanwhile, the Chandrayaan-2 orbiter has continued its work above the moon.

Publisher: Space.com
Date: 2020-08-21T21:08:14 00:00
Author: https www facebook com spacecom
Twitter: @SPACEdotcom
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Were you following this:

NASA Space Station On-Orbit Status 20 August, 2020 - Looking for a Leak - SpaceRef

Commander Chris Cassidy and his crewmates Ivan Vagner and Anatoly Ivanishin will stay in the Zvezda service module from Friday night into Monday morning.

The station's atmosphere is maintained at pressure comfortable for the crew members, and a tiny bit of that air leaks over time, requiring routine repressurization from nitrogen tanks delivered on cargo resupply missions. In September 2019, NASA and its international partners first saw indications of a slight increase above the standard cabin air leak rate.

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The Mystery of Titan's Expanding Orbit - Scientific American

Seen through the eyes of some omnipotent time traveler, our solar system—like any planetary system—is a heaving, pulsing thing. Across millions and billions of years its contents ebb and flow.

But some things are assumed to be comparatively dull and unchanging. Saturn’s largest moon, Titan, for instance, was expected to sit in its orbit with little alteration to that position over the billions of years since its formation. Now a study published in Nature Astronomy by Lainey, et al., has used measurements from the Cassini spacecraft (which orbited Saturn from 2004 to 2017) to determine that Titan has an orbit that grows by an astonishing 11 centimeters each year.

Publisher: Scientific American
Author: Caleb A Scharf
Twitter: @sciam
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Managing Space Traffic in an Increasingly Congested Orbit - Government Executive

The nation recently watched an historic event when SpaceX, a private "New Space" commercial company in the business of launching and managing assets in orbit, successfully returned astronauts to Earth. The mission launch, however, had not gone as smoothly, as overcast weather forced SpaceX to reschedule, but not just to the next clear day.

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Instead, the next available date was determined by two key factors: the physics of efficiently reaching the International Space Station from Cape Canaveral and, importantly, conducting a preflight analysis to ensure there were no conjunctions–a close approach of two or more space objects that might result in a collision­–for the Crew Dragon on its ascent to dock with the space station.

Publisher: Government Executive
Date: 2020-08-20T22:25:01 00:00
Author: Michael Dominguez Martin Faga Jane Fountain Patrick Kennedy Sean O
Twitter: @govexec
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NASA Space Station On-Orbit Status 19 August, 2020 - Space Science and Lab Maintenance - SpaceRef

NASA astronaut and Expedition 63 Commander Chris Cassidy applies a mission sticker to the vestibule in between the U.S. Harmony module and JAXA's (Japan Aerospace Exploration Agency) H-II Transfer Vehicle-9 (HTV-9). The HTV-9 would later be uninstalled from Harmony before being released it into Earth orbit that day completing an 85-day cargo mission. Credit: NASA.

The Expedition 63 crew has turned its attention toward space science and lab maintenance after releasing a Japanese cargo craft from the International Space Station on Tuesday.

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