In addition to producing auroras, a recent extreme storm provided more detail on how much radiation future astronauts could encounter on the Red Planet.

Mars scientists have been anticipating epic solar storms ever since the sun entered a period of peak activity earlier this year called solar maximum. Over the past month, NASA's Mars rovers and orbiters have provided researchers with front-row seats to a series of solar flares and coronal mass ejections that have reached Mars—in some cases, even causing Martian auroras.

This science bonanza has offered an unprecedented opportunity to study how such events unfold in deep space, as well as how much radiation exposure the first astronauts on Mars could encounter.

The biggest event occurred on May 20 with a solar flare later estimated to be an X12—X-class solar flares are the strongest of several types—based on data from the Solar Orbiter spacecraft, a joint mission between ESA (European Space Agency) and NASA.

The flare sent out X-rays and gamma rays toward the Red Planet, while a subsequent coronal mass ejection launched charged particles.

Hurricanes Michael, Dorian, Ian, Nicole and Idalia have all been stared down by one of the NOAA's most powerful satellites since it took its place in geostationary orbit in late 2017. Its replacement is gearing up for launch on a SpaceX Falcon Heavy later this month.

The GOES-U satellite is the 19th Geostationary Operational Environmental Satellite in the NOAA and NASA partnership since the first one launched in 1975. It's the fourth and final of the latest version of the satellites. The first three are already parked at more than 22,000 miles altitude and have their wide-view sites set to track tropical weather, fires, lightning and other dangerous weather on Earth.

The final satellite sits in a stark, white clean room at Astrotech Space Operations' payload processing facility just across the river from Kennedy Space Center. It's already fueled and awaits encapsulation in a SpaceX fairing before heading to KSC for launch. Liftoff is slated for June 25 at 5:16 p.m. during a two-hour window atop what will be the first Falcon Heavy launch of the year.

All four satellites are part of what NOAA calls the GOES-R series, the most powerful satellites for weather forecasting.