Solar Disc with Sunspots. Sunspots are relatively cool areas on the Sun's surface, the photosphere. Their temperature is about 3800 degrees Kelvin, as opposed around 5800 degrees on the rest of the photosphere, and they can measure as much as 50,000 km across (NASA Media Archives). Buy this as a superb wall poster, a canvas print or a framed print.

Border:  Supply print with framing border (no additional cost)
Choose Size and Paper Type Paper A5 A4 A3 A2 A1 A0 Satin £15 £21 £26 £33 £42 £67 Gloss £15 £21 £26 £33 £42 £67 Fine Art Paper £18 £24 £33 £42 £60 £100 Canvas (Rolled) £18 £25 £33 £44 £64 £100 Canvas (Mounted) £27 £47 £73 £85 £123 £179
(if you want to)
A0 840 x 1190mm 33 x 47" A1 594 x 841mm 23 x 33" A2 420 x 594mm 16 x 23" A3 297 x 420mm 12 x 16" A4 210 x 297mm 8 x 12" A5 148 x 210mm 6 x 8"
Quantity:
About the Finish Options: Gloss is a reflective finish. Satin is partially reflective. Fine Art Paper is a quality matt parchment paper. Canvas is 100% cotton fabric, varnished. Mounted is a stretched canvas over a wooden frame.