Stories

APL scientists have helped solve a decades-old mystery as to how Jupiter produces a spectacular burst of X-rays every few minutes. Critical measurements of the local environment came from APL’s Jupiter Energetic particle Detector Instrument (JEDI) onboard NASA’s Jupiter-orbiting satellite Juno.

Sixty years ago today, the U.S. launched its first nuclear-powered satellite, with a power source that has since enabled more than two dozen pioneering space missions. Here’s a look at four of those innovative missions, all led by Johns Hopkins APL.

After a decade in the making and numerous hurdles along the way, the Particle Environment Package (PEP)-Hi, made of two innovative instruments built by Johns Hopkins APL for the international JUICE mission to Jupiter, is complete and ready for installation on the spacecraft.

For its efforts to untangle the long-standing mysteries of the complex solar environment, the Parker Solar Probe mission team has earned the National Space Club and Foundation’s Nelson P. Jackson Award, which recognizes the most outstanding contribution to aerospace in the preceding year.

The recent flight of Virgin Galactic’s VSS Unity marked another successful test for the JHU APL Integrated Universal Suborbital (JANUS) platform, a sensor designed to observe the conditions inside suborbital space vehicles.

A new study, led by Johns Hopkins APL researchers using data from Solar Orbiter’s first flyby of Venus, found the planet’s unusual magnetic field can still accelerate particles to millions of miles per hour — a finding valuable to understanding magnetospheres around planets outside our solar system.

Now 50 times as far from the Sun as Earth, history-making Pluto explorer New Horizons photographs Voyager 1's location from the Kuiper Belt.

The Johns Hopkins APL-operated Parker Solar Probe captured the first complete view of Venus’s dust ring, a band of particles that stretches for the entirety of the planet’s path around the Sun. The new observation opens a window to understanding how dust is captured and redistributed throughout the solar system.

NASA’s Europa Clipper mission has passed a significant milestone, completing its Critical Design Review. Being developed by Johns Hopkins APL and NASA’s Jet Propulsion Laboratory, the mission can now start to assemble and test the spacecraft and its payload of sophisticated science instruments.