Important notice about STEREO Behind
Earth now visible in STEREO Behind's Inner Heliospheric Imager
The STEREO Behind spacecraft has now moved far enough in its orbit for
Earth to enter the HI1-B field-of-view. Earth has been visible in the
HI2 telescopes since launch, but this is the first time it's been
visible in either of the HI1 telescopes, which image areas closer to the
Sun. This is happening because the STEREO spacecraft are moving closer
to the points in their orbits at which they will be directly opposite
Earth on the other side of the Sun.
In the above image, Earth is the object at the center right edge. The
bright object near the upper-right corner is the bright star Pollux (β Gem).
Soon Earth will be visible in STEREO Ahead's HI1 and eventually in the
coronagraphs. In 2015 the Earth will pass behind the Sun from the point
of view of the two spacecraft.
Last Revised: March 19, 2018 15:00:39 UTC
Responsible NASA Official:
Webmaster: Kevin Addison