Lonely Spiral: This image is from a set of Hubble observations which astronomers used to construct the "Cosmic Distance Ladder" - a set of connected measurements allowing the distances to the most distant astronomical objects to be determined. Astronomical distances are only directly measurable for relatively nearby objects - closer than 3000 light-years or so. For distances beyond this, astronomers rely on a set of measured correlations calibrated against nearby objects. UGC 9391 helped astronomers improve their distance estimates by providing a natural laboratory in which to compare two measuring techniques - supernova explosions and Cepheid variables. Improving the precision of distance measurements helps astronomers quantify how quickly the Universe is expanding - one of Hubble's key science goals.

The completed jigsaw puzzle is a beautiful poster. Made to deliver wholesome downtime for friends & family. Ships in gift-ready box for a show-stopping presentation.

* Satin finish image sublimated on chipboard
* Suitable for hanging and framing
* 16 x 20 inches, 500 pieces

All orders ship same or next business day.

If the subtotal of your order is over $50 the shipping is free (the discount is applied automatically to the cart at checkout)

If there is an issue with your order or something arrives damaged, we will refund or replace it.

Not happy with the puzzle you received? No worries. We're so confident that you're going to love it that we offer free returns.

If you have questions, please contact us at Harrison@Mykaimo.com