# What are Spectr-R's major contributions to radio astronomy that could not have been done from Earth?

R. I. P. Spektr-R

Spektr-R Spektr-R (37755, 2011-037A) is a Russian radiotelescope spacecraft in a very high orbit around the Earth. It's orbit is cis-lunar with an apoapsis of about 300 000 km.

## Spektr-R

From Wikipedia:

Spektr-R's orbit allows it to get as far from Earth as possible in order to produce a long baseline for Very Long Baseline Interferometry (VLBI)

Spektr-R (or RadioAstron) is a Russian scientific satellite with a 10 m (33 ft) radio telescope on board. It was launched on 18 July 2011,[7] by Zenit-3F launcher, from Baikonur Cosmodrome to perform research on the structure and dynamics of radio sources within and beyond our galaxy. Together with some of the largest ground-based radio telescopes, this telescope forms interferometric baselines extending up to 350,000 km (220,000 mi).