Why does Earth have so many varied life forms but other planets in the solar system do not?

6 THINGS THAT MAKE LIFE ON EARTH POSSIBLE

Earth is well equipped as a planet and ideally placed in our solar system and galaxy to support life as we know it. The product of some 4.6 billion years of cosmic construction, our planet is flush with life thanks to a fortuitous set of conditions.

BY MANUEL CANALES, MATTHEW W. CHWASTYK, AND EVE CONANT

MANUEL CANALES, MATTHEW W. CHWASTYK, SOREN WALLJASPER, RYAN T. WILLIAMS, NGM STAFF; SEAN MCNAUGHTON

ART: ANTOINE COLLIGNON, TOMÁŠ MÜLLER

SOURCES: PETER D. WARD, UNIVERSITY OF WASHINGTON; KATE MAHER, STANFORD UNIVERSITY; KARINA A. YAGER, NASA GODDARD SPACE FLIGHT CENTER; JASON BARNES, UNIVERSITY OF IDAHO, GUILLERMO GONZALEZ, BALL STATE UNIVERSITY; MICHAEL GOWANLOCK, NORTHERN ARIZONA UNIVERSITY; ICARUS; ASTROBIOLOGY; NASA/JPL; INTERNATIONAL JOURNAL OF ASTROBIOLOGY

20,000

light-years

10,000

light-years

CORE

YOU ARE HERE

SOLAR SYSTEM

Proxima Centauri

AD Leonis

Eta Cassiopeiae A, B

Altair

Eta Cassiopeiae A, B

Altair

SUN

Procyon A, B

Alpha Centauri A, B

Sirius A, B

Delta Pavonis

SUN

Relative size

of the Earth

Solar flare

NEPTUNE

URANUS

SUN

EARTH

MERCURY

About 93 million miles

from Earth to Sun

VENUS

WE HAVE A BIG MOON TO

STABILIZE OUR AXIAL WOBBLE

MOON

EARTH

The moon is a

relatively large

2% of the Earth’s

volume.

because the earth is the only one planet which have suitable temperature,gases,landform for the living beings but the other planets have extremely cold or hot temperature and not have suitable air,landforms,etc so the earth have so many varied life forms but other planets in the solar system do not have.

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