Name: Explorer 4 — Juno-I
Start: 1958-07-26T15:00:57Z
End: 1958-07-26T15:00:57Z
Location: Launch Complex 5

Question 1

What rocket is launching Explorer 4?

Accepted Answer

Explorer 4 is launching on the Juno-I.

Question 2

Who is launching Explorer 4?

Accepted Answer

Explorer 4 is being launched by Army Ballistic Missile Agency, a government launch provider.

Question 3

Where is Explorer 4 launching from?

Accepted Answer

Explorer 4 is launching from Launch Complex 5 at Cape Canaveral SFS, FL, USA.

Question 4

What orbit is Explorer 4 heading to?

Accepted Answer

Explorer 4 is heading to Medium Earth Orbit (MEO).

Question 5

Is the Juno-I reusable?

Accepted Answer

No — the Juno-I is an expendable launch vehicle.

Question 6

How many times has the Juno-I flown?

Accepted Answer

The Juno-I has launched 6 times to date, with 3 successful flights.

Question 7

What is the Explorer 4 mission?

Accepted Answer

An American satellite in order to study the Van Allen radiation belts and the effects of nuclear explosions upon these belts.

Question 8

Where is Cape Canaveral Space Force Station?

Accepted Answer

Cape Canaveral Space Force Station sits on Florida's Atlantic coast, on the Eastern Range run by the U.S. Space Force's Space Launch Delta 45. It is the United States' busiest launch site and has been America's gateway to orbit since the 1950s.

Question 9

Which rockets launch from Cape Canaveral?

Accepted Answer

SpaceX flies Falcon 9 from Space Launch Complex 40, and United Launch Alliance flies the Vulcan Centaur (and the retiring Atlas V) from Space Launch Complex 41.

Question 10

Is Cape Canaveral the same as the Kennedy Space Center?

Accepted Answer

No. Cape Canaveral Space Force Station and NASA's Kennedy Space Center are separate, neighbouring sites — Kennedy is on Merritt Island just to the north. Together they make up Florida's 'Space Coast'.

Question 11

Why do rockets launch from Cape Canaveral?

Accepted Answer

Its pads sit on the Eastern Range, letting rockets fly east out over the Atlantic toward the equatorial and geostationary orbits most commercial and national-security payloads need, away from populated land.

Question 12

Can you watch a launch from Cape Canaveral?

Accepted Answer

Yes — the Space Coast is one of the easiest places in the world to watch a launch from public land. Popular free spots include Playalinda Beach, Space View Park in Titusville, and Jetty Park at Port Canaveral.

Explorer 4

Overview

Mission details

Launch Window

Launch Complex 5

Cape Canaveral SFS, FL, USA

Frequently asked questions