The European Space Agency said on Monday it was studying the impact of U.S. budget proposals that include cuts to NASA moon programmes in which it has a role, and said it remained open to cooperation with the U.

The White House on Friday released a budget blueprint that signals major shake-ups at NASA, as part of an effort to axe $163 billion in federal spending.

The budget threatens to kill Lunar Gateway and the Mars Sample Return mission, along with phasing out the gigantic SLS rocket and Orion spacecraft.