A new material called Alloy 30 shrinks when it is heated and expands when it is cooled and it could help with telescope ...

Sustainability may be an unavoidable feature of advanced civilizations, making advanced technology “indistinguishable from nature.” ...

Perhaps we haven't encountered alien civilizations because there's a "universal limit to technological development" (ULTD) for every intelligent species in the universe and this limit sits well ...

An advanced alien civilization could no doubt have a good guess at our particular phase of industrialization and our energy consumption. On Earth, we use the Kardashev scale for estimating the ...

You've been magically transported to a room and given three choices. Choice 1: You can know the details of three different alien civilizations. These are civilizations that have (or had) reached ...

The scarcity of alien civilizations. It's not unusual for experts to suspect that communicating civilizations are scarce. Pascal Lee, a senior planetary scientist at the SETI Institute, an ...

Alien Civilizations May Be Trapped on Their Home Worlds. by Victor Tangermann. 3.2.24, 8:30 AM EST. Getty Images. Physical limitations may stop them from leaving their planets. Planet Bound.

Don’t bother wondering if alien civilizations can hear our radio broadcasts or not. According to a new study, sufficiently advanced aliens can already see us. The research, set to be published ...

Perhaps we haven't encountered alien civilizations because there's a "universal limit to technological development" (ULTD) for every intelligent species in the universe and this limit sits well ...