(ez ahaztu azpitituluak bistaratzea!)

Duela bi mila urte baino gehiago, Eratostenes greziarrak Lurraren zirkunferentzia kalkulatzea lortu zuen. Hori egin ahal izan bazuen, Lurra biribila zela bazekielako da.

Carl Sagan astronomoak aspaldiko ...

NASA documentary film featuring Carl Sagan discussing the search for life on Mars, including speculation on what form that life might take. The film was made just before NASA's Viking landers were launched in 1975 to begin the search.

There are...

“Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.”

Carl Sagan, Cosmos

Agenda2029.is/essence

Carl Sagan gives the best speech ever about humanity and how foolish we behave. Pale Blue Dot is one of the most important and reflective speeches about the human condition and our place in the Universe. The Pale Blue Dot ...

Carl Sagan explains how the ancient Greeks knew the Earth was round and calculated its circumference over 2,000 years ago. https://t.co/3AjV9hC6hi

An update from around 1989 about the certainty of global warming. The original show is from 1979 and they knew even then and no country can really claim to have taken it seriously then.

Part of Carl Sagans Cosmos.

A group of senators and scientists today called for national and international action to avert a predicted warming of the earth's climate resulting from a buildup of carbon dioxide and other man-made gases in the atmosphere. https://climatestate.c...