Portal Space Systems, a Bothell-based startup, aims to harness the power of the sun to propel spacecraft, making it easier to ...

Portal CEO Jeff Thornburg says the company is expanding its footprint in Bothell, Wash. (Portal Space Systems Photo) Portal Space Systems says it’s setting up its 50,000-square-foot spacecraft ...

Bothell, Wash.-based Portal Space Systems says it has raised $17.5 million in seed funding to accelerate the development of its Supernova space vehicle, which aims to harness the heat of the sun to ...

Portal Space Systems is developing Supernova, a spacecraft bus with a solar thermal propulsion system that offers high thrust and delta-V. Credit: Portal Space Systems WASHINGTON — Startup Portal ...

BOTHELL, Wash. — Bothell-area resident Jeff Thornburg saw an opportunity to develop a new type of spacecraft. One, he says is more maneuverable, more capable, and more rapid. "Our Supernova Spacecraft ...

SAN JOSE, Calif.--(BUSINESS WIRE)--Momentus Inc. (NASDAQ: MNTS) ("Momentus" or the "Company"), a leading U.S. commercial space firm specializing in satellite solutions, in-space transportation, and ...

Portal Space System's Supernova uses sunlight to power a thermal propulsion system that can allow spacecraft to move rapidly between orbits. Credit: Portal Space Systems PARIS — Portal Space Systems ...

Portal’s heat exchanger thruster, known as Flare, fires up during a test in a vacuum chamber. (Portal Space Systems Photo) Bothell, Wash.-based Portal Space Systems says it has successfully tested its ...