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NASA’s Cassini spacecraft infrared images reveal Fresh Ice on Saturn’s moon Enceladus

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – New composite images made from NASA’s Cassini spacecraft are the most detailed global infrared views ever produced of Saturn’s moon Enceladus. And data used to build those images provides strong evidence that the northern hemisphere of the moon has been resurfaced with ice from its interior.

Cassini’s Visible and Infrared Mapping Spectrometer (VIMS) collected light reflected off Saturn, its rings and its ten major icy moons – light that is visible to humans as well as infrared light. VIMS then separated the light into its various wavelengths, information that tells scientists more about the makeup of the material reflecting it.

In these detailed infrared images of Saturn's icy moon Enceladus, reddish areas indicate fresh ice that has been deposited on the surface. (NASA/JPL-Caltech/University of Arizona/LPG/CNRS/University of Nantes/Space Science Institute)

In these detailed infrared images of Saturn’s icy moon Enceladus, reddish areas indicate fresh ice that has been deposited on the surface. (NASA/JPL-Caltech/University of Arizona/LPG/CNRS/University of Nantes/Space Science Institute)

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NASA Study shows Emissions Could Add 15 Inches to 2100 Sea Level Rise

 

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – An international effort that brought together more than 60 ice, ocean, and atmosphere scientists from three dozen international institutions has generated new estimates of how much of an impact Earth’s melting ice sheets could have on global sea levels by 2100.

If greenhouse gas emissions continue apace, Greenland and Antarctica’s ice sheets could together contribute more than 15 inches (38 centimeters) of global sea level rise – and that’s beyond the amount that has already been set in motion by Earth’s warming climate.

Ice shelves in Antarctica, such as the Getz Ice Shelf seen here, are sensitive to warming ocean temperatures. Ocean and atmospheric conditions are some of the drivers of ice sheet loss that scientists considered in a new study estimating additional global sea level rise by 2100. (Jeremy Harbeck/NASA)

Ice shelves in Antarctica, such as the Getz Ice Shelf seen here, are sensitive to warming ocean temperatures. Ocean and atmospheric conditions are some of the drivers of ice sheet loss that scientists considered in a new study estimating additional global sea level rise by 2100. (Jeremy Harbeck/NASA)

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NASA may have discovered a Planet orbiting a White Dwarf

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – An international team of astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) and retired Spitzer Space Telescope has reported what may be the first intact planet found closely orbiting a white dwarf, the dense leftover of a Sun-like star, only 40% larger than Earth.

The Jupiter-size object, called WD 1856 b, is about seven times larger than the white dwarf, named WD 1856+534. It circles this stellar cinder every 34 hours, more than 60 times faster than Mercury orbits our Sun.

WD 1856 b, a potential planet the size of Jupiter, orbits its dim white dwarf star every 36 hours and is about seven times larger. (NASA's Goddard Space Flight Center)

WD 1856 b, a potential planet the size of Jupiter, orbits its dim white dwarf star every 36 hours and is about seven times larger. (NASA’s Goddard Space Flight Center)

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NASA observes California Wildfires from the Air

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – A NASA aircraft equipped with a powerful radar took to the skies this month, beginning a science campaign to learn more about several wildfires that have scorched vast areas of California. The flights are being used to identify structures damaged in the fires while also mapping burn areas that may be at future risk of landslides and debris flows.

They’re part of the ongoing effort by NASA’s Applied Sciences Disaster Program in the Earth Sciences Division, which utilizes NASA airborne and satellite instruments to generate maps and other data products that partner agencies on the ground can utilize to track fire hotspots, map the extent of the burn areas, and even measure the height of smoke plumes that have drifted over California and neighboring states.

A NASA aircraft equipped with Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) flew above California fires on Sept. 3 and 10 to examine the ground below. (NASA/JPL-Caltech)

A NASA aircraft equipped with Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) flew above California fires on Sept. 3 and 10 to examine the ground below. (NASA/JPL-Caltech)

 

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NASA says Rocket Engines may soon be produced by 3D Printing

 

NASA - National Aeronautics and Space AdministrationHuntsville, AL – As part of the Artemis program, NASA is returning astronauts to the Moon where we will prepare for human exploration of Mars. Additive manufacturing, or 3D printing, experts from NASA, industry, and academia are pioneering methods to print the rocket parts that could power those journeys.

NASA’s Rapid Analysis and Manufacturing Propulsion Technology project, or RAMPT, is advancing development of an additive manufacturing technique to 3D print rocket engine parts using metal powder and lasers.

Blown powder directed energy deposition can produce large structures – such as these engine nozzles – cheaper and quicker than traditional fabrication techniques. (NASA)

Blown powder directed energy deposition can produce large structures – such as these engine nozzles – cheaper and quicker than traditional fabrication techniques. (NASA)

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NASA taps Commercial Lunar Payload Services partners to deliver Payloads to the Moon

 

NASA - National Aeronautics and Space AdministrationWashington, D.C. – NASA has issued another request to its 14 Commercial Lunar Payload Services (CLPS) partners to bid on flying a suite of payloads to the Moon. The request asks partners to fly 10 NASA science investigations and technology demonstrations to a non-polar region of the Moon in 2023.

Through the CLPS initiative, NASA taps its commercial partners to quickly land scientific instruments and technology demonstrations on the Moon. The initiative is a key part of NASA’s Artemis program. The science and technology payloads will help lay the foundation for human missions to the lunar surface. A provider will be selected by the end of the year, making it the sixth surface task award.

NASA Enlists Commercial Partners to Fly Payloads to the Moon in 2023. (NASA)

NASA Enlists Commercial Partners to Fly Payloads to the Moon in 2023. (NASA)

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NASA investigates why Asteroid Bennu is shedding material into Space

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – When NASA’s OSIRIS-REx spacecraft arrived at asteroid (101955) Bennu, mission scientists knew that their spacecraft was orbiting something special. Not only was the boulder-strewn asteroid shaped like a rough diamond, its surface was crackling with activity, shedding small pieces of rock into space.

Now, after more than a year and a half up close with Bennu, they’re starting to better understand these dynamic particle-ejection events.

This mosaic image of asteroid Bennu is composed of 12 images collected on Dec. 2, 2018, by the OSIRIS-REx spacecraft's PolyCam instrument from a range of 15 miles (24 kilometers). (NASA/Goddard/University of Arizona)

This mosaic image of asteroid Bennu is composed of 12 images collected on Dec. 2, 2018, by the OSIRIS-REx spacecraft’s PolyCam instrument from a range of 15 miles (24 kilometers). (NASA/Goddard/University of Arizona)

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Star Trek, NASA: 54 Years and Counting

 

NASA - National Aeronautics and Space AdministrationWashington, D.C. – Star Trek debuted 54 years ago on September 8th, 1966. Fans of the television science fiction series Star Trek were saddened when the show’s final episode aired on June 3rd, 1969. It seemed like the end of a very short era, as the program had only been on the air for three seasons. But, the show and its influence continue.

In the documentary “NASA on the Edge of Forever: Science in Space,” host NASA astronaut Victor Glover states, “Science and Star Trek go hand-in-hand.”

The creator and cast members of Star Trek attend the rollout of Space Shuttle Enterprise with NASA Administrator Fletcher (at left). (NASA)

The creator and cast members of Star Trek attend the rollout of Space Shuttle Enterprise with NASA Administrator Fletcher (at left). (NASA)

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NASA project developing New Gears that can Withstand Impact, Freezing Temperatures During Lunar Missions

 

NASA - National Aeronautics and Space AdministrationHampton, VA – Many exploration destinations in our solar system are frigid and require hardware that can withstand the extreme cold. During NASA’s Artemis missions, temperatures at the Moon’s South Pole will drop drastically during the lunar night. Farther into the solar system, on Jupiter’s moon Europa, temperatures never rise above -260 degrees Fahrenheit (-162 degrees Celsius) at the equator.

One NASA project is developing special gears that can withstand the extreme temperatures experienced during missions to the Moon and beyond. Typically, in extremely low temperatures, gears – and the housing in which they’re encased, called a gearbox – are heated.

Andrew Kennett (left) watches as Dominic Aldi (right) uses liquid nitrogen to cool a motor integrated bulk metallic glass gearbox prior to shock testing it. The motor and gearbox are inside the frosty metal “bucket” that contains the liquid nitrogen. The tooling, including the “bucket” is designed to be mounted both vertically (shown) and horizontally on the cube for testing the motor and gearbox in three orientations. (NASA/JPL-Caltech)

Andrew Kennett (left) watches as Dominic Aldi (right) uses liquid nitrogen to cool a motor integrated bulk metallic glass gearbox prior to shock testing it. The motor and gearbox are inside the frosty metal “bucket” that contains the liquid nitrogen. The tooling, including the “bucket” is designed to be mounted both vertically (shown) and horizontally on the cube for testing the motor and gearbox in three orientations. (NASA/JPL-Caltech)

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NASA brings out Mars Perseverance Rover’s Twin on Earth to simulate Mission Operations

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – As NASA’s Mars rover Perseverance hurtles through space toward the Red Planet, the six-wheeler’s twin is ready to roll here on Earth.

A full-scale engineering version of the Mars 2020 Perseverance rover – outfitted with wheels, cameras, and powerful computers to help it drive autonomously – has just moved into its garage home at NASA’s Jet Propulsion Laboratory in Southern California.

Technicians move an engineering version of the Perseverance Mars rover into to its new home in the Mars Yard, part of NASA's Jet Propulsion Laboratory in Southern California. (NASA/JPL-Caltech)

Technicians move an engineering version of the Perseverance Mars rover into to its new home in the Mars Yard, part of NASA’s Jet Propulsion Laboratory in Southern California. (NASA/JPL-Caltech)

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