Astronomy Picture of the Day . Spot The Planet . ... OK, it's a picture of the Sun (duh!), but can you spot the planet? Of course, most of the spots you've spotted are sunspots, as large or larger than planet Earth itself. ... Moon Struck . ... M83: The Southern Pinwheel Galaxy from VLT . ... Mars Polar Lander Target Ellipse . ... South is up in this recent composite color picture of Mars Polar Lander's target region near the Martian South Pole taken on November 28. ... 1999 Leonid Fireball . ...