What different challenges might organisms find on other planets?

1. What are the main challenges in finding exoplanets?
2. What do organisms need to survive on other planets?
3. Why is life not possible on all planets?
4. Can humans survive on other planets?
5. Why is it so difficult to take direct images of planets in other solar systems?
6. Can you see planets from other solar systems?
7. What makes Planet different from the other planets in the solar system?
8. What makes Planet Earth different from the other planets in the solar system?
9. Why do other planets Cannot sustain?
10. How old is the earth?
11. Why was there no life on Earth for the first billion years?
12. What is the best planet to live on besides Earth?
13. Can you breathe on Mars?
14. Can you walk on Pluto?
15. How long could you survive on Mars without a space suit?

What are the main challenges in finding exoplanets?

The major problem astronomers face in trying to directly image exoplanets is that the stars they orbit are millions of times brighter than their planets. Any light reflected off of the planet or heat radiation from the planet itself is drowned out by the massive amounts of radiation coming from its host star.

What do organisms need to survive on other planets?

Orbiting spacecraft and mobile laboratories on the Martian surface have showed that important prerequisites for life still exist today – an atmosphere, elements such as carbon, hydrogen, oxygen, nitrogen, sulphur and phosphorus, and even water, at least in the form of ice.

Why is life not possible on all planets?

Living beings need the atmosphere to be of a specific composition, with oxygen to breathe and live, the atmosphere and the plants provide them with this gas. The temperature of the planet matters a lot too, living beings would cease to exist if the temperature on the planet was too high or too low for them to handle.

Can humans survive on other planets?

Based on his Copernican principle, J. Richard Gott has estimated that the human race could survive for another 7.8 million years, but it is not likely to ever colonize other planets.

Why is it so difficult to take direct images of planets in other solar systems?

Disadvantages: Compared to other methods, Direct Imaging is rather difficult because of the obscuring effect light from a star has. In other words, it is very difficult to detect the light being reflected from a planet's atmosphere when its parent star is so much brighter.

Can you see planets from other solar systems?

Today, we know of over three thousand planets outside of our solar system (also known as exoplanets) and that number increases by over 100 planets each year. Unlike the planets we can see in our Solar System, the majority of exoplanets have not been directly imaged.

What makes Planet different from the other planets in the solar system?

It differs from the other planets because it has liquid water on its surface, maintains life, and has active plate movement. It rotates on its axis every 24 hours (a day) and revolves around the Sun every 365 days (a year).

What makes Planet Earth different from the other planets in the solar system?

Earth is one special planet. It has liquid water, plate tectonics, and an atmosphere that shelters it from the worst of the sun's rays. ... The fact that Earth hosts not just life, but intelligent life, makes it doubly unique.

Why do other planets Cannot sustain?

Low-mass planets are poor candidates for life for two reasons. First, their lesser gravity makes atmosphere retention difficult. Constituent molecules are more likely to reach escape velocity and be lost to space when buffeted by solar wind or stirred by collision.

How old is the earth?

Earth is estimated to be 4.54 billion years old, plus or minus about 50 million years. Scientists have scoured the Earth searching for the oldest rocks to radiometrically date.

Why was there no life on Earth for the first billion years?

For the first billion years of Earth's existence, the formation of life was prevented by a fusillade of comet and asteroid impacts that rendered the Earth's surface too hot to allow the existence of sufficient quantities of water and carbon-based molecules.

What is the best planet to live on besides Earth?

Mars is the best planet because Mars and Earth have more in common than any other worlds in the solar system.

Can you breathe on Mars?

The atmosphere on Mars is mostly made of carbon dioxide. It is also 100 times thinner than Earth's atmosphere, so even if it did have a similar composition to the air here, humans would be unable to breathe it to survive.

Can you walk on Pluto?

Unlike its gaseous neighbors, Pluto is made primarily of rock and ice so it is very possible to walk on. But with only 0.063 surface gravity, as opposed to Earth's 1g, you would need a considerable amount of weight to remain planted to the ground.

How long could you survive on Mars without a space suit?

It's relatively cool with an average annual temperature of -60 degrees Celsius, but Mars lacks an Earth-like atmospheric pressure. Upon stepping on Mars' surface, you could probably survive for around two minutes before your organs ruptured.