Sunday 11am ET Update: In response to a query from Ars, the AMC-9 satellite’s operator, Luxembourg-based SES, issued the following statement on Sunday morning: In the early hours of 1st July, the SES ...

A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours, 56 minutes, and 4 seconds (one sidereal day).

JACKSONVILLE, Fla. — Fifty years ago, on Oct. 24, 1975, meteorology took a monumental leap forward when GOES-1 (Geostationary Operational Environmental Satellite), the world’s first geostationary ...

A geosynchronous satellite is a satellite with an Earth-centred orbit that takes the same amount of time as one rotation of the Earth, roughly 24 hours. From our morning news briefing to a weekly Good ...

A small asteroid came within a cosmic hairbreadth of the ring of communications satellites circling the Earth in geosynchronous orbit this week. Passing by our planet at an altitude of about 35,000 km ...