The 1st interstellar object - 1I/'Oumuamua - had already passed closest to our sun when astronomers first spotted it. So catching this 2nd one - 2I/Borisov - prior to perihelion was a big plus for astronomers! Before and after images here.

At this time of year, for all of us around the globe, the Pleiades star cluster culminates - reaches its highest point in the sky - around midnight.

New image of the Tycho supernova remnant from the Chandra X-ray Observatory.

Hubble Telescope view of a spiral galaxy - called NGC 3717 - oriented sideways.

Nebula IC 63 - in the direction of our constellation Cassiopeia - is slowly dissipating under the influence of ionizing ultraviolet radiation from a hot, luminous variable star known as Gamma Cas.

Why does Venus' upper atmosphere circle the planet in just 4 Earth-days, while the planet itself takes 243 Earth-days to spin once? Japan's Akatsuki spacecraft probed the mysterious "super-rotation" of Venus' clouds.

Launched in 2018, the BepiColombo mission will have the first of its 2 encounters with Venus - while on its way to Mercury - in October 2020. Coordinated observations at that time will involve 2 spacecraft and multiple ground-based telescopes. 

Astronaut teams practice living and working on the moon in the pool at at NASA’s Neutral Buoyancy Lab.

How much of what think you know about black holes is true, and how much is myth? To separate fact from fiction, check out this 4-minute vIdeo from NASA.

Hubble image of an interacting galactic duo known as UGC 2369.