November 2 marked 20 years since the first residents arrived on the International Space Station (ISS). The orbiting habitat has been continuously occupied ever since. Twenty straight years of life in space makes the ISS the ideal “natural laboratory” to understand how societies function beyond Earth. The ISS is a collaboration between 25 space agencies …

NOVEMBER 10, 2018: Astronomers Scott Sheppard, David Tholen, and Chad Trujillo discover the distant object 2018 VG18 – nicknamed “Farout” – located at a present heliocentric distance of 124 AU, at that time the most distantly observed object in the solar system. 2018 VG18 and other distant objects in the solar system are the subject …

Perihelion: 1577 October 27.45, q = 0.178 AU  In all of astronomical history, one of the names that stand out is that of the 16th Century Danish astronomer Tycho Brahe. Of noble birth, he showed an interest in astronomy at a young age, although his family tried to steer him into a career in statesmanship; however, …

It essentially goes without saying that our knowledge of all regions of the solar system has grown enormously during the past few decades. What we might call the “outer solar system,” i.e., beyond Neptune, is a region where our knowledge has perhaps grown the most, since until quite recently we knew almost nothing about this …

NASA astronaut Kate Rubins and her crewmates are celebrating the 20th anniversary of continuous human habitation of the International Space Station (ISS) today. The ISS has been continuously occupied since November 2, 2000, when NASA astronaut and Expedition 1 commander William “Shep” Shepherd and flight engineers Sergei Krikalev and Yuri Gidzenko became the first residents. …

NOVEMBER 1, 1577: Observers in Peru make the first sighting of the Great Comet of 1577. This comet, a brilliant object which is often referred to as “Tycho Brahe’s Comet” and which is one of the most important scientific comets in history, is next week’s “Comet of the Week.”  NOVEMBER 1, 1948: Observers on the …