(For reference, our middle-aged planet, Earth, is some 4.5 billion years old.) SEE ALSO: NASA scientist viewed first Voyager images. What he saw gave him chills. Most exoplanets today are ...
A world seen orbiting a 3-million-year-old star about 520 light years from Earth is one of the youngest known planets, offering a window into early planet formation. The star is an early-stage ...
Earth at Night: Experience how the planet looks at night, with illuminated cities and fishing boats lighting up the oceans. Toggle day and night views to observe how urban centers and borders emerge ...
The aurora forms when charged particles from the sun collide with Earth's upper atmosphere at incredible speeds — up to 45 million mph (72 million kph). Thankfully, our planet's magnetic field ...