Members Can Post Anonymously On This Site
-
Similar Topics
-
By Space Force
128 Air Force Reserve Professionals who will transfer into the Space Force in a full-time capacity.
View the full article
-
By Space Force
The TRICARE Online Patient Portal will no longer be available April 1.To retain health records, download them from the TOL Patient Portal before April 1.
View the full article
-
By NASA
6 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
This artist’s concept depicts NASA’s Europa Clipper as it flies by Mars, using the planet’s gravitational force to alter the spacecraft’s path on its way to the Jupiter system. NASA/JPL-Caltech The orbiter bound for Jupiter’s moon Europa will investigate whether the moon is habitable, but it first will get the help of Mars’ gravitational force to get to deep space.
On March 1, NASA’s Europa Clipper will streak just 550 miles (884 kilometers) above the surface of Mars for what’s known as a gravity assist — a maneuver to bend the spacecraft’s trajectory and position it for a critical leg of its long voyage to the Jupiter system. The close flyby offers a bonus opportunity for mission scientists, who will test their radar instrument and thermal imager.
Europa Clipper will be closest to the Red Planet at 12:57 p.m. EST, approaching it at about 15.2 miles per second (24.5 kilometers per second) relative to the Sun. For about 12 hours prior and 12 hours after that time, the spacecraft will use the gravitational pull of Mars to pump the brakes and reshape its orbit around the Sun. As the orbiter leaves Mars behind, it will be traveling at a speed of about 14 miles per second (22.5 kilometers per second).
The flyby sets up Europa Clipper for its second gravity assist — a close encounter with Earth in December 2026 that will act as a slingshot and give the spacecraft a velocity boost. After that, it’s a straightforward trek to the outer solar system; the probe is set to arrive at Jupiter’s orbit in April 2030.
“We come in very fast, and the gravity from Mars acts on the spacecraft to bend its path,” said Brett Smith, a mission systems engineer at NASA’s Jet Propulsion Laboratory in Southern California. “Meanwhile, we’re exchanging a small amount of energy with the planet, so we leave on a path that will bring us back past Earth.”
This animation depicts NASA’s Europa Clipper as it flies by the Red Planet. The spacecraft will use the planet’s gravity to bend its path slightly, setting up the next leg of its long journey to investigate Jupiter’s icy moon Europa. NASA/JPL-Caltech Harnessing Gravity
Europa Clipper launched from Kennedy Space Center in Florida on Oct. 14, 2024, via a SpaceX Falcon Heavy, embarking on a 1.8-billion-mile (2.9-billion-kilometer) trip to Jupiter, which is five times farther from the Sun than Earth is. Without the assists from Mars in 2025 and from Earth in 2026, the 12,750-pound (6,000-kilogram) spacecraft would require additional propellant, which adds weight and cost, or it would take much longer to get to Jupiter.
Gravity assists are baked into NASA’s mission planning, as engineers figure out early on how to make the most of the momentum in our solar system. Famously, the Voyager 1 and Voyager 2 spacecraft, which launched in 1977, took advantage of a once-in-a-lifetime planetary lineup to fly by the gas giants, harnessing their gravity and capturing data about them.
While navigators at JPL, which manages Europa Clipper and Voyager, have been designing flight paths and using gravity assists for decades, the process of calculating a spacecraft’s trajectory in relation to planets that are constantly on the move is never simple.
“It’s like a game of billiards around the solar system, flying by a couple of planets at just the right angle and timing to build up the energy we need to get to Jupiter and Europa,” said JPL’s Ben Bradley, Europa Clipper mission planner. “Everything has to line up — the geometry of the solar system has to be just right to pull it off.”
About 4½ months after its launch, NASA’s Europa Clipper is set to perform a gravity as-sist maneuver as it flies by Mars on March 1. Next year the spacecraft will swing back by Earth for a final gravity assist before NASA/JPL-Caltech Refining the Path
Navigators sent the spacecraft on an initial trajectory that left some buffer around Mars so that if anything were to go wrong in the weeks after launch, Europa Clipper wouldn’t risk impacting the planet. Then the team used the spacecraft’s engines to veer closer to Mars’ orbit in what are called trajectory correction maneuvers, or TCMs.
Mission controllers have performed three TCMs to set the stage for the Mars gravity assist — in early November, late January, and on Feb. 14. They will conduct another TCM about 15 days after the Mars flyby to ensure the spacecraft is on track and are likely to conduct additional ones — upwards of 200 — throughout the mission, which is set to last until 2034.
Opportunity for Science
While navigators are relying on the gravity assist for fuel efficiency and to keep the spacecraft on their planned path, scientists are looking forward to the event to take advantage of the close proximity to the Red Planet and test two of the mission’s science instruments.
About a day prior to the closest approach, the mission will calibrate the thermal imager, resulting in a multicolored image of Mars in the months following as the data is returned and scientists process the data. And near closest approach, they’ll have the radar instrument perform a test of its operations — the first time all its components will be tested together. The radar antennas are so massive, and the wavelengths they produce so long that it wasn’t possible for engineers to test them on Earth before launch.
More About Europa Clipper
Europa Clipper’s three main science objectives are to determine the thickness of the moon’s icy shell and its interactions with the ocean below, to investigate its composition, and to characterize its geology. The mission’s detailed exploration of Europa will help scientists better understand the astrobiological potential for habitable worlds beyond our planet.
Managed by Caltech in Pasadena, California, JPL leads the development of the Europa Clipper mission in partnership with the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, for NASA’s Science Mission Directorate in Washington. APL designed the main spacecraft body in collaboration with JPL and NASA’s Goddard Space Flight Center in Greenbelt, Maryland, NASA’s Marshall Space Flight Center in Huntsville, Alabama, and Langley Research Center in Hampton, Virginia. The Planetary Missions Program Office at Marshall executes program management of the Europa Clipper mission. NASA’s Launch Services Program, based at Kennedy, managed the launch service for the Europa Clipper spacecraft.
Find more information about Europa Clipper here:
https://science.nasa.gov/mission/europa-clipper/
Check out Europa Clipper's Mars flyby in 3D News Media Contacts
Gretchen McCartney
Jet Propulsion Laboratory, Pasadena, Calif.
818-287-4115
gretchen.p.mccartney@jpl.nasa.gov
Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
2025-024
Share
Details
Last Updated Feb 25, 2025 Related Terms
Europa Clipper Europa Jet Propulsion Laboratory Explore More
2 min read Is There Potential for Life on Europa? We Asked a NASA Expert: Episode 52
Article 2 hours ago 6 min read How NASA’s Lunar Trailblazer Will Make a Looping Voyage to the Moon
Article 2 weeks ago 5 min read NASA’s SPHEREx Space Telescope Will Seek Life’s Ingredients
Article 2 weeks ago Keep Exploring Discover Related Topics
Missions
Humans in Space
Climate Change
Solar System
View the full article
-
By NASA
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
That’s a great question. And it’s a question that NASA will seek to answer with the Europa Clipper spacecraft.
Europa is a moon of Jupiter. It’s about the same size as Earth’s Moon, but its surface looks very different. The surface of Europa is covered with a layer of ice, and below that ice, we think there’s a layer of liquid water with more water than all of Earth’s oceans combined.
So because of this giant ocean, we think that Europa is actually one of the best places in the solar system to look for life beyond the Earth.
Life as we know it has three main requirements: liquid water — all life here on Earth uses liquid water as a basis.
The second is the right chemical elements. These are elements like carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur. They’re elements that create the building blocks for life as we know it on Earth. We think that those elements exist on Europa.
The third component is an energy source. As Europa orbits around Jupiter, Jupiter’s strong gravity tugs and pulls on it. It actually stretches out the surface. And it produces a heat source called tidal heating. So it’s possible that hydrothermal systems could exist at the bottom of Europa’s ocean, and it’s possible that those could be locations for abundant life.
So could there be life on Europa? It’s possible. And Europa Clipper is going to explore Europa to help try to answer that question.
[END VIDEO TRANSCRIPT]
Full Episode List
Full YouTube Playlist
Share
Details
Last Updated Feb 25, 2025 Related Terms
Science Mission Directorate Astrobiology Europa Europa Clipper Planetary Science Planetary Science Division The Solar System Explore More
2 min read NASA Prepares Gateway Lunar Space Station for Journey to Moon
Assembly is underway for Gateway's Power and Propulsion Element, the module that will power the…
Article 2 hours ago 4 min read NASA: New Study on Why Mars is Red Supports Potentially Habitable Past
Article 5 hours ago 4 min read Five Facts About NASA’s Moon Bound Technology
Article 16 hours ago Keep Exploring Discover Related Topics
Missions
Humans in Space
Climate Change
Solar System
View the full article
-
By NASA
Melissa Gates is active in supporting other employees with disabilities at Goddard, as a member of the GSFC Equal Accessibility Employee Resource Group. “Goddard is very responsive to our accessibility needs.”Credits: Courtesy of Melissa Gates Name: Melissa Gates
Title: Secretary III
Organization: Mission Systems Engineering Branch, Engineering Technology Directorate (Code 599)
What do you do and what is most interesting about your role here at Goddard? How do you help support Goddard’s mission?
As a branch secretary, I support my branch office by ordering supplies, managing the meeting calendars, onboarding new employees and otherwise supporting the managers. I help keep the office running.
How did you come to work at Goddard?
In 2005, I got a bachelor’s degree in communications from Fairleigh Dickinson University. In 2012, I got a master’s degree in communications from Regis University.
For over 20 years, I managed our family business in New Jersey involving competitive pool. I helped run the competitions and the daily activities, but I never played pool.
In 2016, I moved to Maryland to work in customer service at MGM National Harbor. In 2019, I started at Goddard through Melwood, a non-profit organization that helps disabled people find employment.
What are the most important skills for a good branch secretary?
Listening. Being prompt. Being organized. Prioritizing tasks. Good people skills. I am a people person, and I can relate well to different personalities. I am very flexible. With teleworking, I am always available.
Where do you see yourself in five years?
I really want to work in communications, especially NASA TV, because I want to continue my first loves of writing and public relations. I enjoy working with the public and getting people’s stories out to others. I like learning about people and sharing what I have learned.
How has having a disability impacted your job choices?
I have had to make people comfortable with my disability. I use a cane and a scooter to get around. Melwood helped me find a job at Goddard, which fulfilled my 20-year dream.
What are your goals as a member of the GSFC Equal Accessibility Employee Resource Group?
As a member of the GSFC Equal Accessibility Employee Resource Group, my focus is to help promote the Ability One Program, a federal program that assists people with all levels of disability find federal jobs. I have my Melwood job through this program. I am very thankful to Melwood and Goddard for giving me a job that offers good benefits and security.
I offer my life experience as a person with a disability now working at Goddard. I try to make management aware of accessibility needs such as bathrooms, removal of snow from sidewalks and parking lots, assistive technology for hearing and sight impaired people and other issues. Goddard is very responsive to our accessibility needs.
What do you do for fun?
I love to read, especially Terry McMillan’s rom-coms. I love bungee jumping, zip lining and roller coasters. I love adrenaline rushes and am a thrill seeker!
I enjoy traveling and have been to Hawaii and Mexico. I would like to take the train across the country. That way I would not have to move around, the train would be moving and I could still see the country. I would enjoy talking to everyone on the train and have a good time.
What is your “six-word memoir”? A six-word memoir describes something in just six words.
Caring. Outgoing. Loves people. Adventurous. Joyful. Grateful.
By Elizabeth M. Jarrell
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Conversations With Goddard is a collection of Q&A profiles highlighting the breadth and depth of NASA’s Goddard Space Flight Center’s talented and diverse workforce. The Conversations have been published twice a month on average since May 2011. Read past editions on Goddard’s “Our People” webpage
View the full article
-
-
Check out these Videos
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.