Redshift — Spectra Tee

The same hydrogen lines, twice: at rest, and as they arrive from a receding source — shifted toward the red. The measure of an expanding universe.

Printed on a black Bella+Canvas 3001 tee. Rest positions outlined, observed positions filled and displaced by z = 0.05. Front placement, soft-hand finish.

Spectra reads matter by its light. Here the light has been travelling, and it shows.

Care is simple: cold wash, inside out, hang dry. We count durability in washes, not adjectives — and if anything about your order isn't right, email care@lunthra.com. A real person answers, and we make it right.

Buying it as a gift? If they're into physics, chemistry, or astronomy, they'll read it instantly — to everyone else it's simply a clean, well-made shirt.