NASA Hack Space: April 2015

For the launch of Sentinel-2A, ESA is inviting you to take part in a photo contest focusing on the theme of 'colour vision'. Enter for a chance to win a trip to ESA's operations centre for the satellite's launch event.

Light can come in many frequencies, only a small fraction of which can be seen by humans. Between the invisible low-frequency radio waves used by cell phones and the high frequencies associated with infrared light lies a fairly wide swath of the electromagnetic spectrum occupied by what are called terahertz, or sometimes submillimeter, waves.

NASA is extending an opportunity to college and university teams to propose small spacecraft technology projects that they can conduct in collaboration with NASA researchers.

ESA astronaut Samantha Cristoforetti sent this greeting to participants at SpaceApps Challenge including in Rome, taking place over the weekend of 11 and 12 April. This is part of the International Space Apps Challenge initiated by NASA, with events in cities all over the world.

This building block of a future Moon base, 3D-printed from simulated lunar material, is now on show at the Hypervital exhibition, part of the International Design Biennale in Saint-Etienne, France.