The world's first postage stamp was issued by Great Britain in 1840. Featuring a bust of Queen Victoria, it has come to be known as the "Penny Black." It also marked the introduction of "uniform penny postage" in a mail system: the rate to carry a letter to ANY destination within the country was now the same, and not based on distance carried.
Zeta Ophiuchus, a massive star plowing through the gas and dust floating in space. Zeta Oph is a bruiser, with 20 times the Sun’s mass. It’s an incredibly luminous star, blasting out light at a rate 80,000 times higher than the Sun! Even at its distance of 400 light years or so, it should be one of the brightest stars in the sky … yet it actually appears relatively dim to the eye.