Following in the footsteps of Aristotle and Galileo, NASA scientists look to take the next step in understanding auroras.

Two NASA rocket missions are taking to the Alaskan skies in hopes of discovering why some auroras flicker, others pulsate, and still others are riddled with holes. Understanding these peculiar features is part of NASA's goal to understand the space environment around our planet,

"We must honor their sacrifice by fortifying our commitment to safety and excellence as new generations of space explorers, follow their footsteps."

Jennifer Kesse’s disappeared on Jan. 23, 2006 and her family has been searching for answers since then. Here's everything to know about who Jennifer Kesse was, what happened when she went missing and the latest on the investigation.

"The change of seasons causes surface melting far inland from the coastal ice front," glaciologist Christopher Shuman said.

The signs of wave ripples in the sandy shores of ancient lake beds, created as wind pushed water back and forth have been found on Mars providing evidence that there were open bodies of water, not just ice, on the planet's surface.

Bill Nelson has stepped down as NASA administrator, ending a half-century of public service. Janet Petro is now the agency's interim chief.

About 100 years after astronomer Edwin Hubble's discovered the "magnificent" spiral nebula, the Hubble Space Telescope and NASA scientists have produced the most comprehensive survey of the Andromeda galaxy, or Messier 31. The Andromeda galaxy is approximately 2.5 million light-years away from the Milky Way.

Any vehicle traversing the rocky terrain on Mars needs a sturdy set of wheels. NASA’s Perseverance rover, for example, sports thick aluminum ones covered in cleats to enhance its traction and mobility.

He’d let me move the telescope around a bit, and I could ask questions. And he was always wonderful to share information with me. I probably just didn’t ask enough questions.”

The data used to create the image is from a Hubble Space Telescope project to capture and map Jupiter's superstorm system.

For the past week, an uncrewed lunar lander has been journeying through outer space on a 60-day mission to the moon on behalf of NASA.