It was the second successful launch in the Explorer program.

The last three satellites were launched as part of the Explorer program.

It was funded as part of the Explorer program, and is sometimes also called Explorer 69.

The new preview program is not identical to the Internet Explorer 9 program.

Explorer 1 was the first of the long-running Explorer program.

May 25 - Explorer program: Explorer 32 is launched.

Extending the larger Explorer program, it was started in 1989.

Local Explorer programs chartered by a local law enforcement agency.

Mission of opportunity is part of the Explorer program.

The Explorer program continues and over more than five decades has launched 90+ missions into Space.