why is life possible only only on the earth ?
Answers
Answer:
All living things need some sort of food, water, the right atmosphere and temperature.Humans need to breathe in oxygen and can survive in temperatures that aren’t extreme hot or cold. Even the strength of gravity determines the form of our bodies such as our bones and muscle strength. Other planets don’t have exactly the same conditions as Earth so life would be somewhat different there.Water is a really important ingredient to sustain the kind of life we know on Earth. Both plants and animals require water for survival. Planet Earth is very special because it contains so much water in liquid form.
Explanation:
OUR LOCATION IS FAR FROM MANY HAZARDS
The solar system is comfortably nestled in a safe harbor
between major spiral arms, and its nearly circular orbit helps
it avoid the galaxy’s perilous inner regions. There are
relatively few stars near the sun, reducing risks to Earth
from gravitational tugs, gamma-ray bursts, or collapsing
stars called supernovae.
OUR SUN IS A STABLE AND LONG-LASTING STAR
Stars more massive than the sun burn hotter and usually
don’t live long enough for planets to develop life. Less
massive, younger stars are often unstable and are prone to
blasting their planets with bursts of radiation.
WE’RE AT JUST THE RIGHT DISTANCE FROM THE SUN
Earth orbits in the so-called Goldilocks zone, where the planet
receives enough energy to allow water to exist as a liquid
on its surface. Too far, and the vital compound stays locked
up as ice. Too close, and the water would rapidly
evaporate into the atmosphere.