Scientists have discovered a new planet. The planet is in a solar system whose star is similar in size to the sun and is about as far from the star as Venus is from the sun. The planet is similar in size to Earth, and it's atmosphere is similar in thickness to Earth's atmosphere. The atmosphere is composed almost entirely of carbon dioxide and methane. Make a hypothesis about the temperature on the planet's surface. Explain your answer using information about the planet's location and atmosphere.

Based on the given information, we can hypothesize that the temperature on the planet's surface is likely to be extremely high. Here's the explanation:

1. Distance from the star: The planet is located about as far from its star as Venus is from the sun. Venus is known for its extreme greenhouse effect, caused by its thick atmosphere trapping heat from the Sun. As the new planet is at a similar distance, it is possible that the greenhouse effect would also be significant.

2. Atmosphere composition: The planet's atmosphere is said to be composed almost entirely of carbon dioxide and methane. Both of these gases are known as greenhouse gases, meaning they have the ability to trap heat within an atmosphere. Similar to Venus, where the atmosphere is mostly made up of carbon dioxide, the high concentration of these gases on the new planet could enhance the greenhouse effect.

Therefore, with a thick atmosphere containing a high concentration of greenhouse gases, combined with a similar distance from its star as Venus, it is reasonable to predict that the temperature on the new planet's surface would be extremely high, potentially making it uninhabitable for life as we know it.