Skip to product information
1 of 9

NASA Explorer 7 Satellite Telemetry Data Tape

NASA Explorer 7 Satellite Telemetry Data Tape

15 total reviews

  • Verified Authentic

This strip of magnetic tape includes a portion of raw telemetry data for the Explorer 7 satellite. This listing is for a section of tape in an acrylic case that was cut from a larger spool recorded in October 1959.

In 1955, even before any artificial satellites had been launched, planning for a satellite-tracking network was already underway at NASA.

Two years later, the Minitrack network of 11 stations positioned around the globe was completed just 3 days before the launch of Sputnik 1.

As satellites populated the skies, interferometers recorded their positions and velocities at each of these stations. This section of tape is from the Minitrack station in Johannesburg, South Africa.

One of the early satellites tracked by this network was Explorer 7 (aka Iota 59), which was launched in 1959 and collected scientific data about Earth’s atmosphere for 2 years before losing communication. 

Among the most notable data it collected were the first satellite measurements of the heat balance of Earth’s atmosphere, launching NASA’s mission of collecting valuable climate data just a year after the agency was formed.

Explorer 7 remains in orbit to this day. Track the satellite's current position here.

This item was featured in a recent Matter box.

  • Acrylic Display
  • Certificate of Authenticity
  • Individually Numbered

Regular price $44.00
Regular price Sale price $44.00
Sale Sold out
Shipping calculated at checkout.
Matter Subscriber Price:

View full details

Customer Reviews

Based on 15 reviews
R.P. (Virginia, United States)

Ray gave this item 5 stars

J.G. (Virginia, United States)

awesome gift for phd advisor

S.B. (Virginia, United States)

Sarah gave this item 5 stars

B.K. (Virginia, United States)

Really cool item for NASA/space lovers. Item came packaged with care. Would strongly recommend!


Exactly as pictured.
Such a cool thing to own. I have to wonder about everything the probe has seen as I hold this bit of history in my hand.
Packaged top survive a trip on any airline and arrived promptly.
Highly recommend this seller.

F.D. (Virginia, United States)

Arrived quickly and was exactly as described!


We only list 100% verified authentic items. We work with reputable collectors, and regularly consult with our network of scientists and experts.

  • Free Shipping

    Orders ≥$50 qualify for free US shipping
    Orders ≥$100 qualify for free global shipping

  • Secure Payments

    Pay how you like: credit card, PayPal, After Pay, Shop Pay, Venmo, Apple/Google/Meta Pay & crypto

  • Simple Returns

    Change your mind? No problem. Enjoy easy returns within 30 days.

similar items_


You deserve better than craft store science products. And we think learning is more impactful when you're holding a tangible piece of what you're learning about. That's why Stemcell exists.

We're dedicated to providing the best scientific products available—whether they're fragments of scientific importance, experimental activities, or just interesting things that scratch your curiosity itch.

With every new product launch, our list of new ideas gets longer rather than shorter. So check in often for our latest projects, and thanks for being a part of our endeavor to make the world a smarter place to live.

Believe in yourself; for everything else, there's science.