By measuring the position of the transiting Venus from different places on Earth, scientists could work out the planet's distance, and using Kepler's laws of planetary motion, they could then work out the distances of all the planets from the sun. For the 1761 transit, for instance, a ...
Using infrared data from the Subaru Telescope in Hawaii, an international team of astronomers has imaged a giant planet around the bright star GJ 504. Several times the mass of Jupiter and similar in size, the new world, dubbed GJ 504b, is the lowest-mass planet ever detected arou...
It is the second planet from the sun. The earth is the third planet from the sun. Venus is similar (相似的) to the earth in size and mass (质量). It is often described as the earth’s “sister”.Scientists have been learning about Venus for a long time. First they looked at ...
There are days which occur in this climate, at almost any season of the year, wherein the world reaches its perfection, when the air, the heavenly bodies, and the earth, make a harmony, as if nature would indulge her offspring; when, in these bleak upper sides of the planet, nothing ...
While Earth's primary companion, the moon, has lingered around our planet for around 4 billion years since its formation in the solar system's infancy, this asteroid will be a temporary fixture that won't even see the year out. "According to the latest data available from NASA's Jet Prop...
What if Ganymede, the largest moon in Solar System was the Earth's second moon? How would it look in the sky, if it was at the same distance as the Moon?
Unlocking the Secrets of Trojan Asteroids Lucy will be the first space mission to study the Trojan asteroids, leftover building blocks of the Solar System’s outer planets orbiting the Sun at the distance ofJupiter. The mission takes its name from the fossilized human ancestor (called “Luc...
Planet-hunting around these stars has proved more difficult recently due to the orbit of the pair, which has drawn the two bright stars close together on the sky over the past decade. Planets in the habitable zone around Proxima receive an average dose of X-rays about 500 times larger than...
The possible planets, called Gliese 581c and Gliese 581d, are located at about the right distance from their star to support liquid water and life as we know it, but many more observations are needed to confirm this. To date, planet hunters have discovered more than 250 extrasolar planets,...
Distance from Jupiter: It is the outermost of the Galilean moons. Callisto orbits Jupiter at a distance of about 1,168,000 miles (1,880,000 kilometers). It takes the moon about seven Earth-days to make one complete orbit of the planet. It also experiences fewer tidal influences than the...