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Communication is vitally important to astronauts while they are in space. Explore how experts communicate with the astronauts aboard the International Space Station in this week's STEM in 30.

I think it surprises a lot of people that a mission as successful as the Cassini-Huygens Mission would be terminated on purpose. Not just shutting the spacecraft off, but terminated with such style by sending it on a destructive dive into Saturn’s atmosphere. Cassini will burn up and be destroyed in a similar way that a meteorite is broken up in Earth’s atmosphere.

This week is National Geography Awareness Week, an opportunity to reflect on the significance of place and how we affect it. One fantastic way to explore geography is from above. When viewing the Earth from a high altitude or even from space, we can begin to see and record natural and man-made features and events. We can see the remains of civilizations and the aftermath of disasters.

Visitors to the newly renovated Boeing Milestones of Flight Hall may miss one particular satellite hanging amongst historical heavyweights such as the Ryan NYP Spirit of St. Louis and the Lunar Module LM-2. This object, however, with its distinctive blue solar panels deployed, is a full-scale engineering prototype of Mariner 2, the first spacecraft to radio useful scientific data from the vicinity of another planet, Venus.

Out Of Many, One by Jorge Rodriguez-Gerada is a large-scale portrait, made of sand and soil, temporarily displayed on the National Mall for the month of October.

Given the enormous popularity of GPS among civilian users, and the critical applications for the military, it is not surprising that a large body of literature has arisen about the origins of this remarkable technology. The curators of the new Time and Navigation exhibition discuss this history, and we have illustrated it with a few select artifacts, such as the engineering model of the Navy’s NTS-2 satellite, one of the key demonstrators of the technology that led to the deployment of the GPS constellation.

Preparation of the upcoming Time and Navigation exhibition is in full swing, and objects are being installed in cases throughout the gallery.  In fact, the gallery became a little more shiny just in time for the holiday season thanks to a delivery from our friends at the Naval Research Laboratory.

Last week, the Museum recognized the 50^th anniversary of Telstar, the first “active” satellite (one that can receive a radio signal from a ground station and then immediately re-transmit it to another) and the first technology of any kind that enabled transatlantic television transmissions.  In 1962, both accomplishments generated intense interest, excitement, and commentary.

On July 10th, 1962 at 11:47 GMT, the world’s first transmission of a television image by satellite took place, using the Telstar satellite. 

Most people know that satellites in orbit do useful things such as collect images of the Earth's surface. At the National Air and Space Museum I use satellite images in my job to understand changes in the Earth's land surface.