Space science
What would happen if the Moon got closer to the Earth?
The Moon is the Earth's only natural satellite. In fact, the Moon orbits the Earth at a steady speed of about 1km/s.
Earth
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Articles about Earth
4,898 published items.
Space science
Are there many planets with life?
We know that one in five stars has an Earth-like planet. There are 200 billion stars in our galaxy alone.
Space science
Discovered a place more habitable than Earth in the Solar System
A planet has just been confirmed as being as promising a place for the origin of life as the early Earth, if not more so.
Space science
Extremely rare new planet revealed, 1 year equals 21 Earth hours
TOI-3261b is located in the constellation Hydrus and belongs to a class of planets that were thought impossible to form.
Space science
What matter on Earth can get close to the Sun without melting?
Many people might think that tungsten is the substance with the highest melting point on our planet, but that is not the case at all.
Space science
Strange object the size of Earth appears on Jupiter
Using the Hubble Space Telescope, planetary scientists observed dark oval-shaped objects appearing on Jupiter.
Space science
On Earth, a compass always points north – but where does it point in space?
On Earth, our planet's magnetic field points north, but in space, things are a bit more complicated.
Discover science
How did people calculate the circumference of the Earth with just a stick?
More than 2,000 years ago, an ancient scientist used only a stick to calculate the approximate circumference of the Earth with 99% accuracy.
1001 mystery
Dogū: One of Japan's Oldest Mysteries
We learn a lot about what happened in the past through the recovery and study of archaeological artifacts.
Space science
The mystery of lonely planets as big as Earth wandering in the Milky Way
An upcoming NASA telescope could discover more than 400 lonely Earth-sized planets wandering the Milky Way.
Space science
Assuming the size of the Earth is 1cm, what is the size of the largest star in the universe?
If the Earth were the size of a marble, the Sun would be the size of a yoga ball, and the largest star in the universe has a diameter that would be hard to believe.
Space science
What is a spacecraft 23 billion kilometers from Earth doing?
The twin spacecraft Voyager 1 and Voyager 2 continue to explore the universe 45 years after launching from Earth and 22 light hours away from the planet.
Space science
Strongest cosmic ray ever recorded detected, origin may be close to Earth
Scientists have discovered the most powerful cosmic rays ever recorded, likely originating from mysterious sources relatively close to Earth.
Space science
The mystery of the rock that 'traveled' through space for tens of thousands of years, then returned to Earth
The 646-gram meteorite once left us, flew out into space, and somehow ended its extraordinary journey on Earth.
Space science
How small is the Earth next to the Sun?
Although it is the largest object in the Solar System, the Sun is only average in size compared to the rest of the stars in the Milky Way galaxy.