A European-Japanese space mission will reach Mercury in 2026, carrying instruments designed to answer a question that has quietly unsettled planetary science for decades: how does a planet like this ...

Mercury, the smallest planet in our solar system, has captivated scientists due to its extreme temperatures, dense iron-rich core, magnetic field, and distinctive geological features. Recent research ...

The inner planets Mercury and Venus will both be visible in the east-southeast sky before sunrise on Tuesday, Nov. 25. When you purchase through links on our site, we may earn an affiliate commission.