It was the closest conjunction of 2 planets in 2019, between Mercury and Mars. It happened low in the evening twilight - and was best seen from Earth's Southern Hemisphere. Check out these photos from EarthSky Community members.

People have reported seeing Transient Lunar Phenomena - unusual flashes and other lights on the moon - for at least 1,000 years. Yet they're still mysterious. Now a scientist in Germany is using a new telescope to try to solve the mystery.

Guy Ottewell lives in England. His illustrations of 3-dimensional space are illuminating. Long summer twilights, explained.

They're not the brightest planets in the sky now, and they're visible only briefly after sunset. But - around June 17, 18 and 19 - Mercury and Mars will have the closest conjunction of 2 planets for 2019.

Earliest sightings of a young crescent in the west after sunset mark the start of the Islamic holy month of Ramadan. When will the UAE's moon-sighting committee see this month's young moon? If they're using binoculars and telescopes (and have clear skies), they might see it May 5. For the eye alone, the date is probably May 6.

For Northern Hemisphere skywatchers, it's the best evening apparition of Mercury in 2019. Now is the best time to look.

A selection of photos of the February 18 and 19 full moon - biggest and brightest supermoon of 2019 - from the EarthSky Community.

Never-before-seen footage of night skies over the HAARP antenna array in remote northern Alaska.

Fast-moving comet C/2018 Y1 (Iwamoto) will pass closest to us - 28 million miles away - on February 12. Charts and more here.

This 3rd episode of an ongoing stargazing video series - called Chasing Darkness - is from Yellowknife, Canada. It features the magnificent northern lights.