If there are any extraterrestrial civilizations out there, some scientists are eager to make contact.
Last month, a team at NASA's Jet Propulsion Laboratory published ideas for an updated memo to broadcast to potential aliens.
Some people are not happy about the idea of giving away our location. Some experts think it is extremely risky.
Sending out a message has such a high impact that you need to take it more seriously, according to a senior research fellow at Oxford.
The poor aliens might already be getting various messages sent for all sorts of reasons.
They want public discussions before broadcasting our location to any extraterrestrial civilizations.
The dangers are small, but poorly understood and not yet well managed, according to a book written by a colleague.
There is no scientific consensus on the ratio of peaceful to hostile.
He argued that this doesn't sound like a good situation in which to take active steps toward contact.
Oxford scientist warns that the location of Broadcasting Earth could cause alien invasion.
A NASA scientist created a new message for aliens.
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