Search results for alien artifacts

Astrobiology Jan 9, 2024

Can alien civilizations detect humanity?

One of the fascinating things about being a human in this age is that we can do more than wonder about other life and other civilizations. We can actually look for them, although there are obvious limitations to our search. ...

Astronomy Jan 3, 2024

After all of this time searching for aliens, are we stuck with the zoo hypothesis?

In 1950, during a lunchtime conversation with colleagues at the Los Alamos National Laboratory, famed physicist Enrico Fermi asked the question that launched a hundred (or more) proposed resolutions. "Where is Everybody?"

Astrobiology Sep 27, 2023

Biotechnospheres as part of planetary intelligence and the search for extraterrestrial civilizations

To safeguard Earth's biosphere, scientists have turned toward Artificial Intelligence (AI) with the hope that it may help to protect biodiversity. Yet this hope has been challenged by AI's appetite for water and energy rooted ...

Astrobiology Sep 18, 2023

If astronomers see these chemicals in a planet's atmosphere, there's likely an advanced civilization there

In an age of ever-growing numbers of exoplanets circling other stars, it's natural that astronomers search for signatures of advanced civilizations. Such signatures may have biological or technological origins.

Space Exploration Jul 20, 2023

First contact with aliens could end in colonization and genocide if we don't learn from history

We're only halfway through 2023, and it feels already like the year of alien contact.

Social Sciences Jul 17, 2023

Why people tend to believe UFOs are extraterrestrial

Most of us still call them UFOs—unidentified flying objects. NASA recently adopted the term "unidentified anomalous phenomena," or UAP. Either way, every few years popular claims resurface that these things are not of our ...

Earth Sciences Nov 14, 2022

Earth's cathedrals: Europe's mountains are cultural heritage, not just natural heritage

In 2019, alpinism was recognized by UNESCO as an intangible heritage of humanity and "shared culture made up of knowledge of the high-mountain environment, the history of the practice and associated values, and specific skills." ...

Planetary Sciences Oct 7, 2022

Citizen scientists enhance new Europa images from NASA's Juno

Citizen scientists have provided unique perspectives of the recent close flyby of Jupiter's icy moon Europa by NASA's Juno spacecraft. By processing raw images from JunoCam, the spacecraft's public-engagement camera, members ...

Planetary Sciences Aug 4, 2022

An interstellar meteor struck Earth in 2014, and now scientists want to search for it at the bottom of the ocean

In 2014, an object crashed into the ocean just off the coast of Papua New Guinea. Data collected at the time indicated that the meteorite just might be an interstellar object, and if that's true, then it's only the third ...

Space Exploration May 26, 2022

What the Voyager space probes can teach humanity about immortality and legacy

Voyager 1 is the farthest human-made object from Earth. After sweeping by Jupiter, Saturn, Uranus and Neptune, it is now almost 15 billion miles (24 billion kilometers) from Earth in interstellar space. Both Voyager 1 and ...

page 1 from 5