The Opportunity rover's 15-year mission on Mars and how it revolutionized understanding of the red planet and solar system at large.

For all of human history, the Sun, our home star, has measured our days and our seasons while fueling all life on Earth. Yet it remains an enigma. NASA's Parker Probe Plus is on a mission to change that -- flying through dangerous radiation to become the closest spaceship to orbit our Sun.

Wildfires have greatly increased in size and intensity over the past few years. After record-setting conflagrations erupted in the region's prized forests, new tools using technology are being developed to help save property and lives.

The eruption of Mount Vesuvius is renowned for its decimation of Pompeii, but nearby, an equally impressive Roman settlement known as Herculaneum was lost to history. Today, the latest in technology is opening a wind to the past, as scientists digitally "unravel" the Herculaneum Scrolls.