Emily Simpson has loved space since she was a 10-year-old kid celebrating her birthday at a planetarium. Now a recent Florida ...

The displacement of the inner diameter of the tube with respect to its outer diameter (i.e., deviation from a common center). The permissible degree of eccentricity can be expressed by a plus and ...

More objects are being launched into space than ever, and most are headed for low Earth orbit. This region of space has ...

A 128-minute orbit, according to Kepler's third law, works out to a semi-major axis of 8,413 km (5,228 mi). Such an object with less than 0.25 eccentricity (a roughly circular orbit), therefore ...

New models reveal Pluto and Charon may have spent some of their early history locked together in an embrace after a grazing ...

The Space Force's top-secret aircraft has been in a highly elliptical high Earth orbit since December 2023. When you purchase through links on our site, we may earn an affiliate commission.

BepiColombo passed a mere 295 kilometers above Mercury's surface at 6:59 CET on Jan. 9. The flyby began on the planet's ...

An eccentricity value of 0 is a circular orbit, while values between 0 and 1 describe an elliptical orbit. However, Perihelion does not lead to hot temperature in Northern Hemisphere despite our ...

About 12.5 minutes later, the rocket's upper stage reached orbit — the main goal of today's test flight, which the company called NG-1. "We got to orbit safely,” Ariane Cornell, vice president ...