Kardashev scale - Wikipediahttps://en.wikipedia.org/wiki/Kardashev_scale
NASA funds SETI study to scan exoplanets for alien "technosignatures"https://newatlas.com/space/nasa-exoplanet-seti-alien-technosignatures/
Opinion | Aliens Must Be Out There - The New York Timeshttps://www.nytimes.com/2021/02/11/opinion/aliens-extraterrestrial-life.html
RNA compound and vitamin B3 found in samples from near-Earth asteroid | CNNhttps://www.cnn.com/2023/03/21/world/ryugu-asteroid-organic-molecules-scn/index.html
Scientists looking for aliens investigate radio beam 'from nearby star' | Space | The Guardianhttps://www.theguardian.com/science/2020/dec/18/scientists-looking-for-aliens-investigate-radio-beam-from-nearby-star
Signs of two gases in clouds of Venus could indicate life, scientists say | Venus | The Guardianhttps://www.theguardian.com/science/article/2024/jul/17/signs-of-two-gases-phosphine-ammonia-in-clouds-of-venus-life
The Search for Intelligent Life Is About to Get a Lot More Interesting - The New York Timeshttps://www.nytimes.com/2022/09/15/magazine/extraterrestrials-technosignatures.html
Unknown space object beams out radio signals every 18 minutes - CNNhttps://www.cnn.com/2022/01/26/world/unusual-space-object-transient-scn/index.html
Was That a Dropped Call From ET? - The New York Timeshttps://www.nytimes.com/2020/12/31/science/radio-signal-extraterrestrial.html
Webb finds molecule only made by living things in another world - Spacehttps://sea.mashable.com/space/26794/webb-finds-molecule-only-made-by-living-things-in-another-world
Why Havent We Found Aliens? : coolguideshttps://www.reddit.com/r/coolguides/comments/vwjfwj/why_havent_we_found_aliens/