Hera asteroid mission goes on trial

Hera asteroid mission goes on trial

[ad_1] At some point, statistically speaking, a large asteroid will impact Earth. Whether that’s tomorrow, in ten years, or a problem for our ancestors, ESA is getting prepared.As part of the world’s first test of asteroid deflection, ESA’s Hera mission will perform a...
Neptune: Size, distance from the Sun, orbit

Neptune: Size, distance from the Sun, orbit

[ad_1] Size: Neptune is slightly smaller than Uranus and has a diameter of 31,000 miles (50,000 kilometers), so about 4 Earths would fit across its face.Distance from the Sun: Neptune is the eighth planet from the Sun. It orbits at an average distance of 2.8 billion...