NASA's Lucy will visit 8 asteroids over 12 years, covering 6.3 billion km to study Jupiter's Trojan swarms — 4-billion-year-old fossils from planet formation.
Voyager 1 and 2 launched in 1977 on a Grand Tour that comes once every 176 years. How they mapped Jupiter, Saturn, Uranus and Neptune — and carried the Golden Record.
Jupiter by the numbers: the Great Red Spot, 95 moons, and the four Galilean worlds — Io's volcanoes, Europa's ocean, Ganymede's magnetic field, Callisto's craters.
When and where to see Venus, Mars, Jupiter, Saturn, and Mercury in 2025 — naked-eye dates, oppositions, conjunctions, and stargazing tips. No telescope required.
NASA's Europa Clipper launched October 2024 to probe Jupiter's icy moon — whose subsurface ocean holds twice Earth's water and may harbor the conditions for life.
