Your email address will not be published. This site uses Akismet to reduce spam. Learn how your comment data is processed. Milky Way galaxy is suitable for life The safest environments for life similar to that on Earth are the lowest density regions in the outskirts of large galaxies like the Milky Way. Things that make life on Earth possible: The Sun is a G-type main-sequence star G2V based on spectral class and is informally referred to as a yellow dwarf.
Photo: naturalhistory. Things that make life on Earth possible: Earth is at just the right distance from the Sun. Life on Earth may not be possible without the two biggest gas giants in the Solar System, Jupiter, and Saturn. Things that make life on Earth possible: Apollo 17 spacecraft took a photo of Earth from space, at a distance of about 45, kilometers 28, miles.
In fact, it was not the first clear image of Earth taken from space — similar photos had already been taken as early as But, the s were the scene of a big surge in environmental activism.
Millions of people gather in the United States for the event. Mars may once have been more hospitable to life than it is now. Scientists think the magnetosphere of Mars collapsed around 3. Now, Mars has a very thin atmosphere: the atmospheric pressure on the Martian surface averages pascals 0. Photo: NASA.
Without the Moon , life on Earth may not be possible. Author Recent Posts. I am a software developer, a former road racing cyclist, and a science enthusiast. Also an animal lover! I write about the planet Earth and science on this website, ourplnt. Please consider supporting me on Patreon.
Latest posts by M. Why do leaves change color in the fall? Next Post Next post: Humans walking on two legs because of exploding stars, new study says. Leave a comment. Life in Our Solar System? Meet the Neighbors. Meet the Neighbors Among the stunning variety of worlds in our solar system, only Earth is known to host life. But other moons and planets show signs of potential habitability.
Marble in the Sky: the Hunt for Another Earth. Marble in the Sky: the Hunt for Another Earth Can we find another world somewhere among the stars that reminds us of our home planet? Will we know it when we see it? In a galaxy that likely holds trillions of planets, ours is so far the only known life-bearing world. We've confirmed only a few thousand of the galaxy's exoplanets, which probably number in the trillions — and already, the variety is stunning.
Among the stunning variety of worlds in our solar system, only Earth is known to host life. Can we find another world somewhere among the stars that reminds us of our home planet? But we are yet to spot any hint that they exist. Existing subscribers, please log in with your email address to link your account access.
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