Humans on the earth have had an over-inflated view of how far the planet’s atmosphere extends into space. It turns out that the ionosphere (电离层), the layer of electrically charged particles that comprises the outer atmosphere, is thinner than expected-and cooler. Understanding the shape an...
How far away is Venus from the sun in miles? Venus: Venus is the second planet from the sun and best known for its very dense atmosphere of carbon dioxide which has created a runaway greenhouse effect. Venus is sometimes known as the sister planet to Earth, since it is otherwise also ...
A region on the red planet has shallow ice deposits buried a few centimetres below the surface. Liquid water can't last on Mars as it evaporates when exposed to the atmosphere so Martian water is locked underground. How long is 1 hour in space? Answer: That number times 1 hour is 0.0026...
When their orbits bring them opposite each other, Earth is about 41.4 million kilometers (25.7 million miles) from Venus. At this distance Venus is more than 100 times as far from Earth as the moon. For a more Earthly visualization, you could fly around the Earth over a thousand times be...
For part of its 248-Earth-year year. Pluto is the 8th planet from the Sun, orbiting just inside the distance of Neptune's orbit from the Sun. Pluto has an atmosphere, but only during the parts of its orbit when it is closest to the Sun. When Pluto gets farther from the Sun, the ...
About 25 kilometers (15 miles) above the surface the atmosphere is far denser than in the ionosphere. Here is the highest density of ozone molecules. Regular oxygen molecules are made from two oxygen atoms; ozone is made from three oxygen atoms. The ionosphere absorbs the 120- to 180-nanome...
As climate change stokes larger and more intense wildfires, firestorms are likely to become more common. Here’s why they occur and what makes them so dangerous.
We all look at the sky and wonder sometimes how far away from us the Sun is and what it takes to reach it. Some might even be wondering what it takes to reach
At the Earth’s surface, you see dirt, sand, grass, and pavement, of course.Seismic vibrations reveal what’s below that: rocks, large and small. This is all part of the crust, which may go down as far as 20 miles (30 kilometers); it floats on top of the ...
“This is a story about what it takes to launch science instruments into space. But the real adventure will be in the data they sent back. Hidden within the numbers will be the answers that reach far beyond Earth, shedding light on how atmospheres throughout the universe change, evolve, ...