Although NASA’s Project Mercury and SpaceShipOne served very different objectives, a closer look reveals that both missions ...

A 60-year-old tribute to America's first human spaceflight program is standing up to the test of time, but what about the contents of its time capsule not to be opened until 2464? The Project Mercury ...

Mercury will be farthest from the sun on Tuesday (Aug. 19), granting early risers a perfect opportunity to spot the fleet-footed world somewhat separated from the glare of our parent star. Mercury ...

Despite being relatively nearby, very few space probes have visited the solar system's innermost planet. Any spacecraft aiming to study Mercury must accelerate to incredible speeds, and that can take ...

Beginning Nov. 25, 2025, Mercury will be far enough west to peek above the horizon just before sunrise. Venus will also be naked-eye-visible as a bright point of light but you’ll want a telescope or a ...