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Topic: NASA’s Science Mission Directorate

NASA reports a Large Asteroid will Pass Safely Pass by Earth on September 1st

 

Written by Laurie Cantillo / Dwayne Brown
NASA Headquarters

NASA - National Aeronautics and Space AdministrationWashington, D.C. – Asteroid Florence, a large near-Earth asteroid, will pass safely by Earth on September 1st, 2017, at a distance of about 4.4 million miles, (7.0 million kilometers, or about 18 Earth-Moon distances). Florence is among the largest near-Earth asteroids that are several miles in size; measurements from NASA’s Spitzer Space Telescope and NEOWISE mission indicate it’s about 2.7 miles (4.4 kilometers) in size.

“While many known asteroids have passed by closer to Earth than Florence will on September 1st, all of those were estimated to be smaller,” said Paul Chodas, manager of NASA’s Center for Near-Earth Object Studies (CNEOS) at the agency’s Jet Propulsion Laboratory in Pasadena, California.

Asteroid Florence, a large near-Earth asteroid, will pass safely by Earth on Sept. 1, 2017, at a distance of about 4.4 million miles. (NASA/JPL-Caltech)

Asteroid Florence, a large near-Earth asteroid, will pass safely by Earth on Sept. 1, 2017, at a distance of about 4.4 million miles. (NASA/JPL-Caltech)

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NASA’s Lunar Reconnaissance Orbiter team invites public to wave at the Moon during Total Solar Eclipse

 

Written by Nancy Neal Jones
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – NASA’s Lunar Reconnaissance Orbiter (LRO) team invites the public to wave at the Moon on Monday, August 21st, 2017 as LRO turns its camera toward Earth.

The LRO Camera, which has captured gorgeous views of the lunar landscape and documented geologic activity still occurring today, will turn toward Earth during the total solar eclipse on August 21st at approximately 2:25pm EDT (11:25am PDT) to capture an image of the Moon’s shadow on Earth.

NASA's Lunar Reconnaissance Orbiter has observed solar eclipses from its vantage point at the moon before. The image LRO takes of Earth on Aug. 21, 2017, is expected to look similar to this view, which the satellite captured in May 2012. Australia is visible at the bottom left of this image, and the shadow cast on Earth's surface by the moon is the dark area just to the right of top-center. (NASA/Goddard Space Flight Center/Arizona State University)

NASA’s Lunar Reconnaissance Orbiter has observed solar eclipses from its vantage point at the moon before. The image LRO takes of Earth on Aug. 21, 2017, is expected to look similar to this view, which the satellite captured in May 2012. Australia is visible at the bottom left of this image, and the shadow cast on Earth’s surface by the moon is the dark area just to the right of top-center. (NASA/Goddard Space Flight Center/Arizona State University)

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NASA’s Cassini Spacecraft to start last five orbits around Saturn

 

Written by Felicia Chou
NASA Headquarters

NASA - National Aeronautics and Space AdministrationWashington, D.C. – NASA’s Cassini spacecraft will enter new territory in its final mission phase, the Grand Finale, as it prepares to embark on a set of ultra-close passes through Saturn’s upper atmosphere with its final five orbits around the planet.

Cassini will make the first of these five passes over Saturn at 9:22pm PDT Sunday, August 13th (12:22am EDT Monday, August 14th). The spacecraft’s point of closest approach to Saturn during these passes will be between about 1,010 and 1,060 miles (1,630 and 1,710 kilometers) above Saturn’s cloud tops.

This artist's rendering shows Cassini as the spacecraft makes one of its final five dives through Saturn's upper atmosphere in August and September 2017. (NASA/JPL-Caltech)

This artist’s rendering shows Cassini as the spacecraft makes one of its final five dives through Saturn’s upper atmosphere in August and September 2017. (NASA/JPL-Caltech)

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NASA’s Voyager Spacecrafts broke new ground during 40 years exploration

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Few missions can match the achievements of NASA’s groundbreaking Voyager 1 and 2 spacecraft during their 40 years of exploration. Here’s a short list of their major accomplishments to date. The Voyager spacecrafts made a lot of planetary firsts

Launched in 1977, the Voyagers delivered many surprises and discoveries from their encounters with the gas giants of the outer solar system: Jupiter, Saturn, Uranus and Neptune.

This montage of images of the planets visited by Voyager 2 was prepared from an assemblage of images taken by the 2 Voyager spacecraft. (NASA/JPL)

This montage of images of the planets visited by Voyager 2 was prepared from an assemblage of images taken by the 2 Voyager spacecraft. (NASA/JPL)

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NASA’s Voyager Spacecrafts continue exploration after 40 Years

 

Written by Elizabeth Landau / Jia-Rui Cook
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Humanity’s farthest and longest-lived spacecraft, Voyager 1 and 2, achieve 40 years of operation and exploration this August and September. Despite their vast distance, they continue to communicate with NASA daily, still probing the final frontier.

Their story has not only impacted generations of current and future scientists and engineers, but also Earth’s culture, including film, art and music. Each spacecraft carries a Golden Record of Earth sounds, pictures and messages. Since the spacecraft could last billions of years, these circular time capsules could one day be the only traces of human civilization.

An artist concept depicting one of the twin Voyager spacecraft. Humanity's farthest and longest-lived spacecraft are celebrating 40 years in August and September 2017. (NASA/JPL-Caltech)

An artist concept depicting one of the twin Voyager spacecraft. Humanity’s farthest and longest-lived spacecraft are celebrating 40 years in August and September 2017. (NASA/JPL-Caltech)

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NASA’s WISE spacecraft reveals nearly five times more comets have passed the Sun then previously predicted

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Comets that take more than 200 years to make one revolution around the Sun are notoriously difficult to study. Because they spend most of their time far from our area of the solar system, many “long-period comets” will never approach the Sun in a person’s lifetime.

In fact, those that travel inward from the Oort Cloud — a group of icy bodies beginning roughly 186 billion miles (300 billion kilometers) away from the Sun — can have periods of thousands or even millions of years.

NASA’s WISE spacecraft, scanning the entire sky at infrared wavelengths, has delivered new insights about these distant wanderers.

This illustration shows how scientists used data from NASA's WISE spacecraft to determine the nucleus sizes of comets. They subtracted a model of how dust and gas behave in comets in order to obtain the core size. (NASA/JPL-Caltech)

This illustration shows how scientists used data from NASA’s WISE spacecraft to determine the nucleus sizes of comets. They subtracted a model of how dust and gas behave in comets in order to obtain the core size. (NASA/JPL-Caltech)

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NASA’s Cassini Spacecraft continues dives between Saturn and it’s Rings

 

Written by Preston Dyches
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – As NASA’s Cassini spacecraft makes its unprecedented series of weekly dives between Saturn and its rings, scientists are finding — so far — that the planet’s magnetic field has no discernible tilt. This surprising observation, which means the true length of Saturn’s day is still unknown, is just one of several early insights from the final phase of Cassini’s mission, known as the Grand Finale.

Other recent science highlights include promising hints about the structure and composition of the icy rings, along with high-resolution images of the rings and Saturn’s atmosphere.

Recent images of features in Saturn's C ring called "plateaus" reveal a streaky texture that is very different from the textures of the regions around them. (NASA/JPL-Caltech/Space Science Institute)

Recent images of features in Saturn’s C ring called “plateaus” reveal a streaky texture that is very different from the textures of the regions around them. (NASA/JPL-Caltech/Space Science Institute)

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NASA’s Juno Spacecraft gets close up look at Jupiter’s Great Red Spot

 

Written by DC Agle
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Images of Jupiter’s Great Red Spot reveal a tangle of dark, veinous clouds weaving their way through a massive crimson oval. The JunoCam imager aboard NASA’s Juno mission snapped pics of the most iconic feature of the solar system’s largest planetary inhabitant during its Monday (July 10th) flyby.

The images of the Great Red Spot were downlinked from the spacecraft’s memory on Tuesday and placed on the mission’s JunoCam website Wednesday morning.

This enhanced-color image of Jupiter's Great Red Spot was created by citizen scientist Jason Major using data from the JunoCam imager on NASA's Juno spacecraft. (NASA/JPL-Caltech/SwRI/MSSS/Jason Major)

This enhanced-color image of Jupiter’s Great Red Spot was created by citizen scientist Jason Major using data from the JunoCam imager on NASA’s Juno spacecraft. (NASA/JPL-Caltech/SwRI/MSSS/Jason Major)

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NASA’s Juno Spacecraft Completes Flyby over Jupiter’s Great Red Spot

 

Written by DC Agle
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – NASA’s Juno mission completed a close flyby of Jupiter and its Great Red Spot on July 10th, during its sixth science orbit.

All of Juno’s science instruments and the spacecraft’s JunoCam were operating during the flyby, collecting data that are now being returned to Earth. Juno’s next close flyby of Jupiter will occur on September 1st, 2017.

Raw images from the spacecraft’s latest flyby will be posted in coming days.

This illustration depicts NASA's Juno spacecraft in orbit above Jupiter's Great Red Spot. (NASA/JPL-Caltech)

This illustration depicts NASA’s Juno spacecraft in orbit above Jupiter’s Great Red Spot. (NASA/JPL-Caltech)

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NASA gets ready Total Solar Eclipse on August 21st

 

Written by Karen Fox
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – For the first time in 99 years, a total solar eclipse will occur across the entire continental United States, and NASA is preparing to share this experience of a lifetime on August 21st, 2017.

Viewers around the world will be provided a wealth of images captured before, during, and after the eclipse by 11 spacecraft, at least three NASA aircraft, more than 50 high-altitude balloons, and the astronauts aboard the International Space Station – each offering a unique vantage point for the celestial event.

This image of the moon crossing in front of the sun was captured on Jan. 30, 2014, by NASA's Solar Dynamics Observatory observing an eclipse from its vantage point in space. (NASA)

This image of the moon crossing in front of the sun was captured on Jan. 30, 2014, by NASA’s Solar Dynamics Observatory observing an eclipse from its vantage point in space. (NASA)

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