Ross Andersen is a staff writer at The Atlantic who has reported extensively on developments in cosmology, America’s ambitions for cosmic exploration, and the Trump administration’s attempts to cut funding for NASA. Recently, he visited NASA’s Jet Propulsion Lab and the agency’s Goddard Spaceflight Center, and spoke with current and now-departed staff members about how the administration’s cuts could threaten decades of U.S. progress in space science. Ask him anything on April 28 at 12 p.m. ET.