There may still be snow on the ground outside, but spring is only a few short weeks away. That means camping season is just around the corner. You can prepare yourself for those off-grid adventures to come by snagging a portable power station. Better yet, you can save some money by thinking ahead.
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But those enticed by the call of adventure must ensure they know what they're signing up for. Fresh food is scarce and alcohol is limited. And accommodation at BAS facilities is shared dormitories. Staff work a seven-day shift rota.
One reason for routinely launching GPS satellites is simply "constellation replenishment," said Col. Andrew Menschner, deputy commander of the Space Force's Space Systems Command. Old satellites degrade and die, and new ones need to go up and replace them. At least 24 GPS satellites are needed for global coverage, and having additional satellites in the fleet can improve navigation precision. Today, there are 31 GPS satellites in operational service, flying more than 12,000 miles (20,000 kilometers) above the Earth.