Two wildfires in Northern Arizona, sparked from lightning, have burned at least 60,000 acres in a little over a week — and, while firefighters work around the clock trying to contain the fires, ...

With significant investments and a growing fleet of over 1,060 satellites, China poses a serious challenge to US space operations and security.

China has overtaken the U.S. in the number of spy satellite launches, fielding advanced optical, radar, and geosynchronous systems that challenge American space dominance and targeting control. This ...

Shijian-21 and Shijian-25 ‘appeared visually merged in optical sensor data’, space tracking firm says, a feat US seeks to match by 2026.

This paper is proposing a practical approach for a Geosynchronous Transfer Orbit design. To design the intermediate orbits between the injection orbit and the Geosynchronous Orbit were used the ...

At these distances, the satellites remain within Earth’s protective magnetic shield and can reliably measure the planet’s response to space weather conditions. However, to more directly study incoming ...

This is because the planet's rotation has entered an unexpected period of acceleration, but what would happen if it kept ...

The payload Russia's military chose to launch on the Angara A5 is unusual. The rocket deployed its primary passenger, Kosmos ...

A tense space race is currently underway between NASA and China - with China now taking the lead in a move that could see it ...

Two Chinese satellites reportedly performed what appears to be the country's first high-altitude orbital refueling, as U.S.

But these Mission Extension Vehicles don't have the ability to transfer fluids from one satellite to another. That is the ...