IBEX Launch Page

Learning Section

IBEX Questions and Answers IBEX Q & A
IBEX will explore the boundaries of our solar system. Learn more about the mission through questions and answers.

Did You Know...

IBEX: Did you know... About Our Solar System's Boundaries
See if you can test your knowledge about this subject or learn more by reading about it.


Artist concept of space weather showing an active Sun with flares and a CME in the upper right, the Earth in the lower right with types of technology affected by space weather to the lower left; satellites, airplanes, the ISS and ground-based electrical lines. Studying the Sun-Earth connection
IBEX is one of many missions that supports NASA's research into the science of Heliophysics.
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IBEX Launch

Spacecraft: Interstellar Boundary Explorer (IBEX)
Launch Vehicle: Orbital Sciences Pegasus XL Rocket
Launch Location: Reagan Test Site, Kwajalein Atoll
Launch Date: Oct. 19, 2008
Launch Time: 1:48 p.m. EDT

IBEX: Mapping the Boundaries of Our Solar System

Pegasus under the L-1011 before drop

Image above: An early morning view of the Pegasus XL rocket suspended underneath Orbital Sciences' L-1011 aircraft prior to drop. Photo credit: NASA

NASA's IBEX spacecraft launched from an Orbital Sciences Pegasus XL rocket at 1:48 p.m. EDT on Oct. 19, 2008 from the Reagan Test Site on the Kwajalein Atoll in the Marshall Islands.

IBEX is the first NASA spacecraft to image and map the dynamic interactions taking place where the hot solar wind slams into the cold expanse of space.

› View Launch Video
› IBEX Newsletter
› IBEX Photo Gallery

Prepare for the Mission

Pegasus Mission Planner Test Your Knowledge
Find out if you've got the right stuff to plot the course for future space missions.
› Take the Quiz


Pegasus drops away from the L-1011 IBEX Launches!
NASA's IBEX spacecraft is poised to map the boundaries of our solar system.
› View This Video

Rocket Science 101 Rocket Science 101
Assemble a Delta II or Atlas V rocket from main engine to payload fairing!
› Build a Rocket

Launch Services Launch Services
Why launch anything into space?

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Page Last Updated: September 30th, 2013
Page Editor: Holly Zell