If there is water on mars, there might be life on mars, and if there is life on mars, that means that humans could survive there as well.
Even if there isn't life on Mars, the water would mean that people would be able to go there and maybe even live there without having to rely on bringing water in space ships.
That's simple. They could look through a telescope and see some planets near the earth, but not all. Astronauts travel in space and study them.
We can look for it by using these tecniqes. •Seeing it in rocks (meteorites) •Seeing it gravitationally •Seeing it spectroscopically (remote sensing) •Seeing morphological features of it (remote sensing) •Seeing it (remote sensing)
The only object in our solar system other than Earth to have rivers is Titan, Saturn's largest moon. Instead of water, Titan has rivers of liquid methane. Other planets outside of our solar system probably have rivers, but we have only discovered a tiny fraction of these planets and we do not know what their surfaces look like.
Pluto is a Dwarf Planet because it is too small to be a Classical Planet. Dwarf Planets are much smaller than Classical Planets. If you look at a diagram of the solar system with Pluto in it, you will see that it is much smaller compared to the other Classical Planets.
By sending a probe to other planets we get amazing pictures how what they look like close up. Other sensors on the probe can find out about the magnetic field and the surface temperature, and chemicals in the atmosphere, and find out details of the moons and rings of the outer planets.
Scientists often look for the molecule water when investigating the possibility of life on other planets. Water is essential for all known forms of life and its presence can indicate the potential for habitability on other planets.
Liquid water is an indicator that there is probably life present.
Scientists look for molecules such as water, methane, and organic compounds like amino acids or nucleotides when investigating the possibility of life on other planets. These molecules are considered essential for life as we know it.
That's simple. They could look through a telescope and see some planets near the earth, but not all. Astronauts travel in space and study them.
Green and live plants, animals, water, good soil, air
different
Liquid water. All else is incidental.
Two reasons. (1) Such planets are very dim, from our point of view. Some of the planets in our own Solar System look roughly as bright as the brightest stars; now imagine them at least 100,000 times farther - that would make them 10 billion times dimmer, from our point of view. (2) Such planets are very close to their star - once again, from our point of view, i.e., considering the angular distance.
NASA assumed Mars was once a place with water (rivers and seas). They are searching for water since it is believed "where there is water there could be life."
You can look at the map on the thingy by the girl(the academy,dropout one)there u can look at where the planets are or there could be a new one and u can goto it.
yes look at mars there are many trenches from erosion
They are sending robots to explore other planets where they conduct evperiment to see if the planet can support life.