Voyager Data Page

MIT Space Plasma Group

Recent Data VOYAGER 2

The outer atmosphere of the Sun expands outward to form the solar wind, with average speeds of 400 km/sec (roughly one million miles per hour). The Plasma Science Experiment on Voyager 2 measures that speed every 192 seconds, and that information is returned to Earth over the Deep Space Net, analyzed, and plotted here within a few days of receipt.

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VOYAGER 2 SOLAR WIND SPEED PLOT

- click on figure to see larger version of each plot

These plots show hourly averages of the solar wind speeds measured by Voyager 2 over the last 500 and 100 days, respectively.

Show recent events.

VOYAGER 2 SOLAR WIND DYNAMIC PRESSURE

- click on figure to see larger version of each plot

These plots show hourly averages of the solar wind dynamic pressure observed by Voyager 2 over the entire mission and over the last two years, respectively. These pressures are normalized to 1 AU by multiplying by the square of the space craft's distance.

VOYAGER DATA OVERVIEW

A plot of 50-day averages of the solar wind speed, density, and temperature over the life of the Voyager mission from 1977 to the present is available by clicking below. The density shown on this plot is normalized to Earth by multiplying by the distance to Voyager in AU squared.

Voyager 2 Overview Plot

Acquiring the Voyager 1 and 2 Data

Hourly averages of the Voyager data are available from MIT through the link below or directly through anonymous ftp to space.mit.edu. (cd pub/plasma/vgr). Please look at the README files in each directory before using these data.

Continue on to the Voyager Data Files

Go to the MIT Space Plasma Group Home Page

Go to the NASA JPL Voyager Project Home Page

Go to the MIT Home Page

For more information contact John Richardson at MIT (e-mail: jdr@space.mit.edu).