Pareidolia is the phenomenon where you interpret random stimuli as familiar images. And even though these photos are of planets, nebulae, and other objects in space, it's easy to imagine that they're actually pictures of human faces, caterpillars, elephants, and even Starfleet badges.

The tick-shaped volcano, northeast of Alpha Regio, Venus, taken by the Magellan spacecraft

(via NASA)

The Happy Face crater, also known as the Galle, originally discovered in the late 1970s in pictures taken by the Viking Orbiter. This shot was made by the Mars Global Surveyor aircraft in March 1999

(Malin Space Science Systems, MGS, NASA via APOD)

Face on Mars, in the Cydonia region on the Martian surface, taken by the Viking 1 orbiter in 1976 (upper) and the Mars Global Surveyor in 2001

(The Viking Project, NASA via APOD)

(Malin Space Science Systems, MGS, JPL, NASA via APOD)

The Crowned Face, within Libya Montes region of Mars, photos taken in 2000

(Photo taken by NASA JPL's Mars Global Surveyor, via Wikimedia Commons.)

Brain in a bowl, a Martian impact crater, taken by the Mars Global Surveyor in May 2004

(via Astronomy Picture of the Day)

Tinkerbell (or The Bird), a triple merger of galaxies in the constellation of Sagittarius, photo taken using ESO's Very Large Telescope in December 2007

(via ESO)

The Horsehead Nebula, in the constellation Orion

(NASA/ESA/Hubble Heritage Team via Wikimedia Commons)

Han Solo in carbonite, on the northern margin of the Caloris Basin on Mercury, taken by the Messenger spacecraft in July 2011

(NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington via Messenger)

The Snowman on the surface of Mercury, taken by the MEssenger spacecraft in February 2012

(NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington via Messenger)

An elephant-like lava flow in Mars' Elysium Planitia region, photogaphed by the HiRISE camera of Mars Reconnaissance Orbiter in March 2012

(NASA/JPL/University of Arizona via HiRISE)

A blue human head-like nebula, shot by NASA's Galaxy Evolution Explorer satellite and shows an ultraviolet view of the Cygnus Loop nebula in the constellation Cygnus, March 2012

(NASA/JPL-Caltech via Space)

The Space Invader, in a cluster of galaxies known as Abell 68, taken in infrared by Hubble's Wide Field Camera 3, March 2013

(NASA, ESA, and the Hubble Heritage/ESA-Hubble Collaboration via Hubblesite)

Cosmic Caterpillar, a light-year-long knot of interstellar gas and dust (known as IRAS 20324+4057), as seen by Hubble Space Telescope in August 2013

(NASA, ESA, the Hubble Heritage Team (STScI/AURA), and IPHAS via Hubblesite)

Giant Starfleet pin-like Martian dunes in a field inside a large crater near Mawrth Vallis. The photo was taken by Mars Reconnaissance Orbiter, December 2013

(Credit: NASA/JPL-Caltech/Univ. of Arizona via NASA)

Hand of God, a cloud of material ejected from an exploded star (known as PSR B1509-58 or B1509 for short), January 2014

(NASA/JPL-Caltech/McGill via Space)

A smile of two faint galaxies (SDSSCGB 8842.3 and SDSSCGB 8842.4), in the constellation of Ursa Major, taken with the Hubble Space Telescope, February 2015

(NASA & ESA via Spacetelescope)