A novel proposal says that we should look for alien megastructures. But can we really expect an alien civilization to build them?

A popular Chinese hard sci-fi novel imagines a coming war with an alien species and gets some things right in the process, and badly fumbles the others.

Science fiction likes to show us aliens that explore the galaxy with ease. But the reality may for intelligent life on other worlds may be very different.

Hydrogen and helium are the most common elements in the universe. And they might just make large planets warm enough for life.