Akatsuki, also called the Venus Climate Orbiter, was launched in 2010 to enter the orbit of Venus and collect the planet's ...

Precise orbit determination (POD) is vital for satellite navigation, positioning, and timing services, especially as large Low Earth Orbit (LEO) constellations grow in scale. A new method integrates ...

The Japanese Aerospace Exploration Agency ( JAXA) declared its Akatsuki spacecraft dead on Tuesday (Oct. 28), more than a ...

High-precision space-based gyroscopes are important in space science research and space engineering applications. In fundamental physics research, they can be used to test the general relativity ...

The planet’s rotation fluctuates as it travels around the sun, and measurements suggest we’re losing more than a millisecond during the long days of summer. By Jacey Fortin This article was updated ...

THAT’s NO MOON - Earth doesn’t just have one moon; sometimes, it has a companion satellite or “mini-moon.” Discovered on ...

The winter solstice, famously the shortest day of the year, is nearly three weeks behind us. So why has the sun been rising later than it did on Dec. 21? Like much of our day and night cycles, the ...

Planet Earth is spinning a little faster today — resulting in one of the shortest days of the year. But the change will be so minuscule you won’t even notice. We’re talking even less time than the ...