In September 2010 a team of US scientists discovered an Earth-sized planet called Gliese 581g. It has a surface temperature neither too hot nor too cold for liquid(液态)water. Scientists think there is a chance that the planet could have life. The planet Gliese 581g goes around a star ...
We know more about the surface of the planet Mars than we know about what is at the bottom of Earth's oceans.Until recently, scientists had mapped only about 20 percent of the se a floor. But our knowledge of the deep seas is changing because of information from satellites. Scientists h...
A planet does not have to have a moon to be a planet. Pluto has numerous moons but is not a planet in the same sense as Earth. Also, Mercury has no moons but is a fully-fledged planet like Earth. All the gas planets, including Jupiter and Neptune, have rings of dust. Jupiter's ...
Like Earth, Mars has four seasons because the planet tilts on its axis. "On Earth, the seasons of spring, summer, autumn and winter are all of similar length. On Mars, because of the marked eccentricity of its orbit, the seasons differ much more in length," wrote Sheehan and Bell. In...
Scientists have long puzzled over the shade of the planet closestto the Sun. Mercury's surface...BotkinKowacki, Eva
The Earth’s atmosphere is held around the planet by the force of gravity. A view of the atmosphere from Chain of Craters Road in Hawaii Volcanoes National Park in Hawaii. Photo:USGS, public domain. Layers of the Atmosphere The Earth’s atmosphere has five main layers and a sixth layer, ...
Answer to: A newly discovered planet has a radius twice as large as earth's and a mass five times as large. What is the free-fall acceleration on...
Maren is a copywriter and content creator with a true passion for exploring the beautiful planet we call home. Her love for the ocean and salty days brought her to Lapoint, where she’s been living the digital nomad life and visiting our surf camps in all corners of the world. Maren aim...
Mercury is the smallest planet in our solar system and the one closest to our Sun. Like its neighbor Venus, Mercury has no moons. Mercury orbits the... Learn more about this topic: Mercury's Surface & Atmosphere | Features & Composition ...
They say that astronauts looking down on Earth gain a sense of perspective that changes them forever. They begin to understand how much we are a part of our planet, and how much it is a part of us. The astronauts are 400 kilometres off the surface of Earth, and while the top of Kubu...