The age of the universe and its vast number of stars suggests that extraterrestrial life should be common. If that’s the case, then where is everyone? In this infographic we explore some possibilities, ranging from the Zoo Hypothesis to the Technological Singularity

The age of the universe and its vast number of stars suggests that extraterrestrial life should be common. If that’s the case, then where is everyone? In this infographic we explore some possibilities.

The Fermi Paradox - "there are 100 Earth-like planets for every grain of sand in the world."

A long way to go: The yellow dot shows the 200 light year radius of how far radio waves have reached into the Milky Way. (via Earth calling: Tiny yellow dot shows distance radio broadcasts to aliens have travelled)

January 14, 1953 – The CIA-sponsored Robertson Panel first meets to discuss the UFO phenomenon.

Jan 1644 – America’s first reported UFO sighting was made by pilgrims in Boston, Massachusetts.

A graphical representation of the Arecibo message – Humanity's first attempt to use radio waves to actively communicate its existence to alien civilizations

Astronomer Frank Drake sends out a powerful series of radio pulses using the Arecibo radio telescope in Puerto Rico on November 16 intended to communicate with extraterrestrial intelligences. It is aimed at the globular star cluster

Paradoxe de Fermi — Wikipédia

Paradoxe de Fermi — Wikipédia

Paradoxe de Fermi — Wikipédia

Gamma-ray bursts (GRBs) are flashes of gamma rays (electromagnetic radiation of high frequency) that come from energetic explosions in distant galax

Notre existence et l'univers, par Prof. Hubert Reeves, conf. Inaugurale de l'iMagination Week 2016 - YouTube

Notre existence et l'univers, par Prof. Hubert Reeves, conf. Inaugurale de l'iMagination Week 2016 - YouTube

Pioneer plaque

The Pioneer plaques are a pair of gold-anodized aluminium plaques which were placed on board the 1972 Pioneer 10 and 1973 Pioneer 11 spacecraft, featuring a pictorial message, in case either Pioneer 10 or 11 is intercepted by extraterrestrial life.

Fermi Paradox

Time for some Real Talk: Cixin Liu’s Three-Body Problem trilogy has trouble presenting non-stereotypical characters but I CAN’T STOP READING IT and that’s because it takes all these great theories …

Paradoxe de Fermi — Wikipédia

File:Voyager probes with the outer worlds Voyager Probes with the Outer Worlds Artist’s impression of the Voyager space probes with the outer worlds they passed.

Où sont-ils ? : les extraterrestres et le paradoxe de Fermi, 2017

Où sont-ils ? : les extraterrestres et le paradoxe de Fermi, 2017

http://waitbutwhy.com/2014/05/fermi-paradox.html

http://waitbutwhy.com/2014/05/fermi-paradox.html

O'Neill Cylinder spacecraft

Exterior view of a double cylinder colony. A couple of space colony summer studies were conducted at NASA Ames in the Colonies housing about people were designed. A number of artistic renderings of the concepts were made.

NASA's conception of the Terrestrial Planet Finder

A new ultrastable adhesive identified through ESA research could be a key to assembling rock-solid structures for space, including large telescopes, instruments and antennas to peer deeper into the cosmos or sharpen views of our terrestrial environment.

Paradoxe de Fermi — Wikipédia

magictransistor: “ E. Weiß, Bilderatlas der Sternenwelt (The Leonid Meteor Storm of ”

Why Haven't We Found Aliens? #Infographic #Aliens

Why Haven't We Found Aliens? #Infographic

The active search for Extraterrestrial Intelligence (SETI) has been ongoing for half a century.

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