Nearly 300 current and former NASA employees — including astronauts, engineers and scientists — have signed the "Voyager Declaration," a formal statement raising alarm over recent actions and steep budget cuts proposed by the Trump administration.

More than 200 current and former NASA employees have signed an open letter known as the Voyager Declaration pushing back on "harmful" proposed cuts.

NASA faces a proposed $6 billion agency-wide funding cut by the Trump administration, including a 47% reduction of science missions and activities.