Dubbed Teleios, the unusually symmetrical space object is puzzling astronomers with its near-perfect shape and mysterious ...

The goal was to witness firsthand a phenomenon that would demonstrate "100% that the planet is spherical" and attempt to ...

But aerospace experts believe the landing capsule itself — a spherical object about 3 feet (1 meter ... the spacecraft from ...

Soviet spacecraft Kosmos 482 reentered Earth's atomosphere Saturday morning after 53 years in orbit during a failed attempt ...

A recent video created from images captured by Curiosity shows clouds tinted red and green flowing though the sky over Mars. Captured using the rover's Mastcam instrument on January 17, 2025, the ...

The decision came after scientists established three criteria for what defines a planet: it must orbit the sun, be spherical in shape and have “cleared” its orbital path of other debris.

A look at the evidence for the Earth being round or spherical. Aristotle’s reasoning is explained. The evidence includes a ship’s hull disappearing first over the horizon, the stars ...

Hygiea, classified as an asteroid so far, might actually be a dwarf planet. The European Southern Observatory has been able to confirm that Hygiea has a spherical shape. But, Hygiea is missing a ...

Venus is sometimes referred to as our sister planet because it is in some ways ... were built like deep-sea submersibles, with thick spherical shells about a metre in diameter able to withstand ...

A look at the evidence for the Earth being round or spherical. Aristotle’s reasoning is explained. The evidence includes a ship’s hull disappearing first over the horizon, the stars ...