LAUNCH
JULY 30, 2018

VENUS FLYBY #1
SEPTEMBER 27, 2018

VENUS FLYBY #2
DECEMBER 21, 2019

VENUS FLYBY #3
JULY 5, 2020

VENUS FLYBY #4
FEBRUARY 15, 2021

VENUS FLYBY #5
OCTOBER 10, 2021

VENUS FLYBY #6
AUGUST 15, 2023

VENUS FLYBY #7
OCTOBER 31, 2024

FIRST CLOSE APPROACH
DECEMBER 19, 2024

The First Mission to the Nearest Star
Solar Probe Plus will be a historic mission, flying into the Sun's atmosphere (or corona) for the first time. Coming closer to the Sun than any previous spacecraft, Solar Probe Plus will employ a combination of in situ measurements and imaging to achieve the mission's primary scientific goal: to understand how the Sun's corona is heated and how the solar wind is accelerated. Solar Probe Plus will revolutionize our knowledge of the origin and evolution of the solar wind.
WHAT'S HOT?

March 18, 2014
Solar Probe Plus Moves into Advanced Development

Solar Probe Plus has reached a key stage of development, moving ahead with full-scale spacecraft fabrication, assembly, integration and testing.
+Read More

SOLAR PROBINGS
At closest approach, Solar Probe Plus will be hurtling around the Sun at approximately 450,000 miles per hour! That's fast enough to get from Philadelphia to Washington, D.C., in one second.
                      View all Fun Facts >
KEY RESOURCES


Solar Probe Plus Fact Sheet

January 2014


Solar Probe Plus Mission Engineering Study Report
March 2008

Solar Probe Plus Report of the Science and Technology Definition Team
July 2008

RELATED LINKS
Solar Probe Plus at NASA