During the Apollo missions, astronauts left special reflectors on the Moon’s surface. Scientists on Earth still use them today, bouncing…
The Parker Solar Probe, launched in 2018, is the fastest human-made object in history. As it swings past the Sun,…
When astronomers found the first confirmed exoplanets in 1992, they weren’t orbiting a normal star. Instead, they circled a pulsar—a…
When Apollo astronauts left seismometers on the Moon and later sent spacecraft to crash into its surface, they detected vibrations…
Most people think midnight is the best time to stargaze, but that’s not always true. The darkest skies happen when…
Jupiter’s Great Red Spot, a storm larger than Earth, has raged for at least 350 years—but it’s slowly shrinking. In…
When astronomers add up all the visible stars, planets, and gas in the universe, it accounts for only about 5%…
Neutron stars are the collapsed cores of massive stars, packed so densely that a sugar-cube-sized chunk would weigh about a…