Spacecraft that orbit around Earth do so in two types of orbits: circular and elliptical. In a circular orbit, the spacecraft is always at the same distance from the center of the Earth.

New research on the orbits of these mysterious asteroids near Venus stress the need for better space rock surveillance.

by aerial agents that maintain a uniformly spaced formation on a time-varying elliptical orbit encompassing the convoy. Elliptical orbits are used as they are more economical than circular orbits for ...

Welcome to Edition 7.48 of the Rocket Report! The shock of last week's public spat between President Donald Trump and SpaceX ...

Abstract: An optimal guaranteed cost control strategy for autonomous rendezvous operations in a targeted elliptical orbit is presented in this paper. The relative motion equations described by linear ...

A private lunar lander from Tokyo-based company ispace was aiming for a touchdown in the unexplored far north with a mini ...

RESILIENCE Lunar Lander Completes all lunar orbital maneuvers in advance of June 6, 2025 (JST) landing. TOKYO, May 31, 2025--(BUSINESS WIRE)--ispace, inc. (ispace) (TOKYO: 9348), ...

“Starting at 7:51 p.m. CST on February 13, the team completed a 4 minute, 15 second Lunar Orbit Insertion burn with Blue Ghost’s RCS thrusters and main engine to enter an elliptical orbit ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

With 10 times the mass of our planet, and spending only part of its orbit in the habitable zone, Kepler-725c is very ...