太空导航

Declassified Pentagon files have reignited the UFO fever, but the cold, hard laws of physics suggest that reaching Earth remains a cosmic impossibility. 六月 01, 2026

NASA's Kennedy Space Center is preparing to launch Artemis II, a 10‑day crewed test flight that will send four astronauts farther than Apollo did — without attempting a lunar la... 三月 31, 2026

Artemis II is scheduled to lift off on April 1, 2026. Here’s when to tune in, who’s aboard, and the best ways to watch NASA’s astronauts leave Earth for a 10-day loop around the... 三月 28, 2026

NASA's Artemis II crew will lift off no earlier than April 1 at 6:24 p.m. EDT from Kennedy Space Center. Here's the timeline, who’s on board, where to watch and the technical te... 三月 28, 2026

On March 17, 1958, the U.S. launched Vanguard 1, a 1.5 kg solar-powered sphere that became the oldest human-made object in orbit. The mission tested early rocket hardware and, t... 三月 17, 2026

NASA has set an April 1 launch opportunity for Artemis II but the date depends on repairs to the SLS upper stage and a successful wet dress rehearsal. Here’s what the remaining ... 三月 12, 2026

NASA has named 6 March 2026 as the earliest possible launch for Artemis II, the first crewed lunar flyby in over 50 years. The 10-day mission will test Orion and SLS systems, ca... 二月 21, 2026

How Black women mathematicians working in segregated NASA labs programmed Orion-era triumphs — and reshaped STEM careers. A historic look at Katherine Johnson, Dorothy Vaughan, ... 二月 13, 2026

Artemis II, slated for as early as February 2026, is a 10-day crewed shakedown that will put NASA's SLS rocket and Orion spacecraft through deep-space navigation, life-support a... 一月 27, 2026

NASA's Artemis II stack has rolled to Launch Pad 39B and teams at Kennedy Space Center are running final tests ahead of a wet dress rehearsal on Feb. 2 and a targeted launch win... 一月 24, 2026

NASA’s Artemis II Space Launch System and Orion spacecraft completed a slow, 4-mile rollout to Launch Complex 39B on January 17, 2026, a key step toward the first crewed Artemis... 一月 18, 2026

NASA is preparing Artemis II, a 10-day crewed lunar flyby slated for as early as February 2026 that will send four astronauts farther from Earth than anyone since 1972. The miss... 一月 14, 2026

A recent advance in quantum metrology—using entanglement to evade a key measurement limit—could shrink clock errors enough to change how spacecraft find their way between the st... 十一月 18, 2025