John Grunsfeld: Seeker of Life in the Solar System –Steps Down as NASA’s Chief Scientist





“After exploring strange new worlds and seeking out new life in the universe, I can now boldly go where I’ve rarely gone before – home,” said John Grunsfeld who will retire from NASA April 30, capping nearly four decades of science and exploration with the agency. “I’m grateful to have had this extraordinary opportunity to lead NASA science, and know that the agency is well-positioned to make the next giant leaps in exploration and discovery.”

John Grunsfeld will retire from NASA April 30, capping nearly four decades of science and exploration with the agency. His tenure includes serving as astronaut, chief scientist, and head of NASA’s Earth and space science activities. Grunsfeld has directed NASA’s Science Mission Directorate as associate administrator since 2012, managing more than 100 science missions — many of which have produced groundbreaking science, findings and discoveries. Here are a few of his many quotes and observations on the search for life in the universe:


On Enceladus' Global Ocean

"These findings add to the possibility that Enceladus, which contains a subsurface ocean and displays remarkable geologic activity, could contain environments suitable for living organisms," said John Grunsfeld astronaut and associate administrator of NASA's Science Mission Directorate in Washington. "The locations in our solar system where extreme environments occur in which life might exist may bring us closer to answering the question: are we alone in the Universe."



Hubble's Quest

“The Wide Field Infrared Survey Telescope (WFIRST) has the potential to open our eyes to the wonders of the universe, much the same way Hubble has,” said John Grunsfeld, astronaut and associate administrator of NASA’s Science Mission Directorate. "This mission uniquely combines the ability to discover and characterize planets beyond our own solar system with the sensitivity and optics to look wide and deep into the universe in a quest to unravel the mysteries of dark energy and dark matter.”

Mission to Pluto –The Unexplored Planet




“Even as the New Horizon’s spacecraft speeds away from Pluto out into the Kuiper Belt, and the data from the exciting encounter with this new world is being streamed back to Earth, we are looking outward to the next destination for this intrepid explorer,” said John Grunsfeld, astronaut and chief of the NASA Science Mission Directorate at the agency headquarters in Washington.

Possibility of Life on Ganymede

"This discovery marks a significant milestone, highlighting what only Hubble can accomplish," said John Grunsfeld, assistant administrator of NASA's Science Mission Directorate at NASA Headquarters. "In its 25 years in orbit, Hubble has made many scientific discoveries in our own solar system. A deep ocean under the icy crust of Ganymede opens up further exciting possibilities for life beyond Earth."

NASA's Explorer Program

“The Explorer Program has a long and stellar history of deploying truly innovative missions to study some of the most exciting questions in space science,” John Grunsfeld, NASA’s associate administrator for science, said in the space agency’s statement today. “With these missions we will learn about the most extreme states of matter by studying neutron stars and we will identify many nearby star systems with rocky planets in the habitable zone for further study by telescopes such as the James Webb Space Telescope.”

Mar's Curiosity Mission –Water Discovered




“Our quest on Mars has been to ‘follow the water,’ in our search for life in the universe, and now we have convincing science that validates what we’ve long suspected,” said John Grunsfeld, astronaut and associate administrator of NASA’s Science Mission Directorate in Washington. “This is a significant development, as it appears to confirm that water — albeit briny — is flowing today on the surface of Mars.”

“John leaves an extraordinary legacy of success that will forever remain a part of our nation’s historic science and exploration achievements," said NASA Administrator Charlie Bolden. “Widely known as the ‘Hubble Repairman,’ it was an honor to serve with him in the astronaut corps and watch him lead NASA's science portfolio during a time of remarkable discovery. These are discoveries that have rewritten science textbooks and inspired the next generation of space explorers."

Geoff Yoder, currently the directorate’s deputy, will serve as acting associate administrator until a successor is named.

Notable science achievements under Grunsfeld’s leadership include the Curiosity rover Mars landing in 2012 – and its remarkable discoveries about the habitability of ancient Mars – and the July 2015 New Horizons Pluto flyby, completing the initial reconnaissance of the solar system.

Grunsfeld managed numerous missions to protect and study our home planet, including the Deep Space Climate Observatory, Orbiting Carbon Observatory-2, and Global Precipitation Measurement spacecraft, in addition to numerous Earth science aircraft campaigns. These and other projects have laid the foundation for future missions to better understand how Earth is changing.

Grunsfeld has also been a strong advocate for research with suborbital rockets, high-altitude balloon flights and CubeSats, to enable great science and train the next generation of explorers.

Preparations are well underway for a host of other missions and activities that will continue Grunsfeld’s work. These include the first U.S. mission to return a sample of an asteroid, the first mission to look for signs of life on Jupiter’s moon Europa, a mission to study the sun closer than ever before, participating in a national space weather strategy, and constructing the next rover to Mars, scheduled to launch in 2020.

Additionally, NASA’s fleet of robotic spacecraft are exploring the solar system and beyond, revealing the workings and beauty of the universe, while discovering thousands of new worlds. This pioneering work will continue with the launch of the James Webb Space Telescope in 2018, and the Wide-Field Infrared Survey Telescope.

Grunsfeld, a fierce proponent of science education and five-time space shuttle astronaut, was the lead spacewalker during the last Hubble Space Telescope servicing flight in 2009, which successfully upgraded the observatory to the apex of its scientific capability. He’s also the last human to touch the iconic telescope. In April 2015, Hubble celebrated 25 years of operations, vastly outperforming its planned lifetime of 15 years. In 2015, Grunsfeld was inducted into the U.S. Astronaut Hall of Fame.

The Daily Galaxy via NASA


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