SpaceX launched a mystery satellite to geostationary transfer orbit (GTO) from Florida's Space Coast early Sunday morning ...

Thanks to atomic clocks (and all the worldly forces that influence them), scientists know that Earth's rotation has begun to ...

Using the UVES spectrograph on the VLT they measured their orbital speed, ... The astronomers observed the orbital path of the two stars in 2M1510 being pushed and pulled in unusual ways, ...

Varying revolution times are due to each planet's distance from the sun and its orbital speed. To stream 13News Now on your phone, you need the 13News Now app. Download the 13News Now app.