Helenite is glass made from fused volcanic dust from Mt. Saint Helens. Approx. 0.75" diameter Please note: each marble is unique and contains minor imperfections. Surfaces are not completely smooth.

The James Webb Space Telescope (JWST) is the next generation of space-based telescope and the successor of the Hubble Space Telescope. Its launch date was repeatedly postponed and it became one of the most highly-anticipated space missions until it finally ...

Okinawan star sand displayed in a round acrylic case. The majority of sand contained in each case is an exoskeleton, however, you can expect to find occasional shells mixed in. Be sure to check them out under magnification. Container Dimensions: ...

During the 1970s–80s, NASA used state-of-the-art computers from the company Modular Computer Systems. These "MODCOMP" systems were used in processing and controlling the telemetry of many space projects including the Voyager probes, Skylab, as well as the early Space Shuttle ...

If you compress any amount of mass, it becomes denser. If you compress it enough, it will become so dense that light can no longer escape it—this size is the object’s Schwarzschild radius. An object that is compressed smaller than ...

Be a Voyager, exploring of the universe, while wearing this 1.25" version of the plaque on the Voyager spacecrafts. What the symbols mean: In the upper left-hand corner is a drawing of the phonograph record and the stylus carried with ...

The Audubon bird call is a simple machine used to imitate and attract many bird species. The bird call’s sound is produced by rotating the birchwood cylinder against the cast zinc plug. By varying the pressure between the two surfaces ...

Uranium glass is a type of glass made with a small amount of the radioactive element with atomic number 92. This causes it to glow intensely bright green under ultraviolet light. It was once common for glass manufacturers to add ...

OWN A PIECE OF ONE OF THE OLDEST COMPUTER PROGRAMS EVER CREATED Perforated paper tape, also known as computer tape, was an early form of physical media used for storing digital data. It was first developed in 1725 and rose ...

Discover the Wonders of the Universe Stemcell invites you to explore the universe with Matter, our monthly subscription box that brings the museum experience to your doorstep. Each month, our curators handpick the most captivating scientific treasures from around the ...

A beam splitter is a high-precision tool used in experimental laboratories. It is a glass cube made of several lab-grade glass prisms with special optical filtering coatings. This type is also called an x-cube. A beam splitter’s purpose is to ...

This metal fragment is a piece of the titanium skin of an SR-71 Blackbird stealth aircraft. This supersonic plane holds the record for fastest airplane ever flown. The mangled wreckage presented here was recovered from the impact site of a ...

In 2021, we acquired a mystery film reel. The canister holding the 16mm film had NASA information on it, so we purchased it without knowing what was on it. We sent it to multiple digitization companies, but the spool holding ...