SpaceX's Starship rocket thundered into the sky over South Texas early Monday. It was the 14th test flight of the world's most powerful launch vehicle. This time, however, the rocket's massive upper stage squeezed out some extra oomph from its Raptor engines and accelerated to orbital velocity.

On all of Starship's previous flights, SpaceX intentionally dialed back the full capability of the rocket to fly a suborbital trajectory, slow enough for Earth's gravity to pull the vehicle back into the atmosphere before it could complete a full lap around the planet. After several successful suborbital flights in a row, SpaceX officials decided this launch should go all the way to low-Earth orbit. And it did.

What's more, SpaceX packed 26 of the company's newest generation of Starlink broadband satellites into the rocket's cargo bay. One by one, the flat-packed satellites—too large to fit inside SpaceX's workhorse Falcon 9 rocket—were released from Starship's payload deployer using a system of pulleys and cables to eject the satellites overboard like a Pez dispenser spits out candy.

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The first in a new class of space telescopes is on track to reach the launch pad in the early 2030s, NASA announced this week.

The PRIMA mission will be the first of NASA's Probe Explorers, a new line of observatories intended to do more science for less money. The agency's space telescopes typically fall into lower-cost "Explorer-class" missions, with cost caps in the range of a few hundred million dollars, or flagship observatories like the recently launched Nancy Grace Roman Space Telescope, which came with a price tag of some $4.3 billion.

With the Probe Explorers, NASA officials seek to find a better balance between the smaller Explorer missions and multibillion-dollar flagships. NASA has studied potential Probe Explorer mission concepts for several years after an independent panel of scientists recommended the new mission category. But it wasn't clear until recently whether NASA's science budget, which is under pressure from the Trump administration, would be sufficient to actually start developing one.

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