Space for the day

Jonathan Amos has a BBC article about Pluto:

Scientists have released their latest map (photo, top) of Pluto, using images from the New Horizons spacecraft (photo, bottom). It unwraps the visible parts of the sphere on to a flat projection, giving another view of the features that have started to emerge in recent days. Evident are the light and dark patches at the equator, including one long dark band being dubbed "the whale".
NASA's New Horizons probe is now less than seven days away from its historic flyby. It is due to pass over the surface of the dwarf planet at a distance of less than thirteen thousand kilometers, grabbing a mass of images and other kinds of scientific data. The pictures at that point will be pin sharp, showing targets on the surface of the twenty-three-hundred-kilometer-wide body at a resolution of better than a hundred meters per pixel.
In the photo above, the features are much less resolved; the images from which it was made were acquired between 27 June and 3 July 2015. They are a combination of shots from the probe's high-resolution, "black and white" camera, Lorri, and its lower-resolution, color imager, known as Ralph. The whitish area in the centre covers the face of the dwarf planet that will present itself to New Horizons at its closest approach.
To the east is the spotty terrain that has generated most discussion so far. Quite what these blobs represent is unclear, as each one is a few hundred kilometers across.
Cradled in the whale's "tail", on the far left of the map, is something that looks like a doughnut. It could be a impact crater or a volcano, although at this resolution any interpretation remains pure speculation.
New Horizons has recovered from its weekend hiccup, in which the probe tripped itself into a protective safe mode, dropping communications with Earth for over an hour.
Engineers say they understand the cause of the computer glitch. This particular type of error, they stress, has now been ruled out for the probe's next few historic days.
The spots are part of a dark band that wraps around much of Pluto's equatorial region
As of Wednesday, New Horizons was less that eight million kilometers from Pluto.
It is moving at nearly fourteen kilometers per second, far too fast to go into orbit on 14 July. Instead, it must gather as much information as it can while it sweeps past not just Pluto, but its five moons as well: Charon, Styx, Nix, Kerberos, and Hydra.
The flyby occurs on the fiftieth anniversary of the first successful American flyby of Mars by the Mariner 4 spacecraft. By way of comparison, New Horizons will gather five thousand times as much data at Pluto than Mariner did of the Red Planet.
New Horizons' difficulty is getting all that information back to Earth. The distance to Pluto is vast, more than four billion kilometers, and this makes for very low bit rates.
It is likely to take sixteen months to play back every piece of science acquired over the next week.

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