An interesting article¹ on physics.org caught my attention. Its title is “Solved: The Mystery of the Expansion of the Universe.” But this can be misleading.

Scientists led by Valerio Poggiali of Cornell University’s Center for Astrophysics and Planetary Science have used Cassini spacecraft data to learn a little more about Saturn’s largest moon Titan.

On December 21 about an hour before sunset, the planets Jupiter and Saturn will appear very close together low in the western sky in a celestial event called a conjunction.¹ In fact, the two planets will be so close together that they should appear as a “double planet” to the naked eye.

An exoplanet 260 light-years away is being described as the first of its kind ever detected.^1,2 This exoplanet, catalogued as LTT 9779b, is called an “ultra-hot Neptune” because of its large size and nearness to its host star.

Well, there goes another star, disappearing into the night as if it had never existed. For an entire year, Hubble scientists used the space telescope to record snapshots of SN 2018gv—a supernova (SN) or exploded star.