Important data can be stored and concealed quite easily in ordinary plastic using 3D printers and terahertz radiation, scientists show. Holography can be done quite easily: A 3D printer can be used to ...

Over a year ago, we received a signal from Mars—an encoded message from Europe’s Martian orbiter, picked up by three observatories on Earth. The contents of this simulated alien message, crafted by an ...

A collaborative project dubbed “A Sign in Space” is a winner of the 2024 Gizmodo Science Fair for simulating a message to Earth from intelligent aliens. The project involved beaming an encoded message ...

As you are reading this, a message is hurtling through space. That message, which is encoded in short pulses of light, is actually an invitation to visit Lexington, Kentucky, and its target ...