Perihelion is the point at which an orbiting body is closest to the sun. The word comes from Greek and literally means around (peri) the sun (helios).

SES completed its long-anticipated acquisition of Intelsat this summer, 15 months after agreeing to combine and create the scale needed to take on Starlink’s growing broadband dominance in low Earth orbit (LEO).

Slow orbital changes caused pulses in Earth's oxygen cycle 500 million years ago, which spurred explosions of animal life.

Earth's orbit is an ellipse, not a perfect circle. Earth's distance from the Sun varies by about 3 million miles throughout the year. Earth's orbit's semimajor axis is approximately 93 million miles. Earth travels roughly 584 million miles in its yearly ...

As on-orbit capabilities grow more advanced, ground systems are undergoing a transformation of their own. Ground network specialist ST Engineering iDirect, with headquarters in Herndon, Virginia, is investing in new approaches to interoperability, cloud-native infrastructure and AI-driven network management.

Google recently unveiled Project Suncatcher, a research "moonshot" aiming to build a data center in space. The tech giant plans to use a constellation of solar-powered satellites which would run on its own TPU chips and transmit data to one another via lasers.

Iceye has launched five additional SAR satellites into orbit, bringing the company’s total number of satellites deployed since 2018 to 62.

The European Vega C rocket blasted off into space on Monday, successfully putting a South Korean Kompsat-7 satellite into Earth's orbit.