What’s a constellation? What’s an asterism?

Both constellations and asterisms are patterns of stars. What’s the difference? Source: https://earthsky.org/astronomy-essentials/definition-what-is-a-constellation-asterism…

Hubble snaps spiral’s profile

The NASA/ESA Hubble Space Telescope sees galaxies of all shapes, sizes, luminosities and orientations in the cosmos. Sometimes, the telescope gazes at a galaxy oriented sideways—as shown here. The spiral galaxy featured in this Hubble image is called NGC 3717, and it is located about 60 million light-years away in the constellation of Hydra (the Sea Serpent). Source: https://phys.org/news/2019-10-hubble-snaps-spiral-profile.html…

New Statistical Study Links Sea Monster Descriptions to Dinosaur Discoveries

If they exist today, what exactly do sea serpents look like? If your description includes a long neck attached to a large bulky body, that doesn’t really sound like ‘serpent’ – does it? According to a new study, the portrayals of mythical creatures referred to as sea serpents changed during the 18th century as more… Read more » Source: https://mysteriousuniverse.org/2019/04/new-statistical-study-links-sea-monster-descriptions-to-dinosaur-discoveries/…