You can contact a seller on Amazon by going to their seller page either before or after you've placed an order. To view and reply to conversations with Amazon sellers, go to the Buyer/Seller Message ...

In 1974, astronomers used the Arecibo Observatory in Puerto Rico to beam a message from humanity to the stars, in one of the most well-known attempts to contact possible alien life. For the 44th ...

The new message is really cool, but we need to have a serious discussion about whether we should be trying to contact extraterrestrials. Reading time 5 minutes An international team of scientists has ...

Imagine the following scenario: A remote radio telescope detects a repeating signal from a Sun-like star a few tens of light years from Earth. In the next few days, other radio telescopes repeat and ...

A message has been sent to Earth from a spacecraft orbiting Mars, to simulate potential communication from an advanced alien civilisation. On 24 May, a spacecraft at Mars, the Trace Gas Orbiter (TGO), ...

Apple’s new iMessage Contact Key Verification at first glance seems to be a rather niche security feature, likely to be of interest only to the most paranoid or highly-targeted individuals. But it ...