President Trump's 2019 NASA budget would pull the plug on astronomer's No. 1 priority for the next decade. NASA's former astrophysics chief says Congress should keep WFIRST funded.

Another servicing mission to Hubble may not be in the best interests of the astronomical science community or the taxpaying public, and I believe an alternative to servicing Hubble — namely, build Hubble 2.0 — is more feasible.