Could aliens visit Earth? Here are some challenges
Scientists say it’s unlikely aliens visit Earth anytime soon, because interstellar travel faces huge barriers of distance, energy and time. The post Could aliens visit Earth? Here...
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BOOM over Massachusetts and U.S. East probably a meteor
Many reported a streak across the daytime sky and a boom over Massachusetts and surrounding areas in the US East, probably a meteor. The post BOOM over Massachusetts and U.S. East...
Visible planets and night sky guide for May and June
Visible planets and night sky guide. The full-appearing Blue Moon is still in the sky tonight. Watch a video about it with EarthSky's Deborah Byrd. The post Visible planets and nig...
Can a single season have only 2 full moons?
We know it's possible to squeeze 4 full moons into a single season. But can a season have just 2 full moons? Turns out it can, but it is rare. The post Can a single season have onl...
Deneb is an incredibly distant star. But how do we know?
The star Deneb - part of the Summer Triangle - is one of the most distant stars you can see with your eye alone. But why don't we know its distance precisely? The post Deneb is an...
How cities can change the weather during storms
Researchers looked at 22 years of data to discover how cities can change the weather. Certain storms intensify over cities, leading to more urban flooding. The post How cities can...
Sun news: Solar wind surges, brings aurora to high latitudes
Sun news for May 31, 2026: Solar wind surges past 550 km/s! Kp hits 4. G1 storm chance today. Glancing CMEs may add fuel. Aurora watchers, stay alert! The post Sun news: Solar wind...
NASA Brings Its Lunar Ambitions into Focus with Moon Base Missions
Rovers, drones, and landers will usher in a sustained lunar presence, under the new plan NASA announced this week. The post NASA Brings Its Lunar Ambitions into Focus with Moon Bas...
Evidence of Water Plumes from Jupiter's Moon Europa Vanishes
Reanalysis shows that the Hubble Space Telescope's detection of water vapor escaping from Jupiter’s moon Europa might have been a glitch. The post Evidence of Water Plumes from Jup...
Blue Origin mega-rocket explodes on launch pad
Blue Origin experienced a setback late Thursday when its New Glenn mega-rocket exploded. The launch pad was also destroyed. The post Blue Origin mega-rocket explodes on launch pad...
Arcturus, brightest star of the northern sky
Arcturus is the brightest star in the northern half of the sky. It's easy to find in spring in the Northern Hemisphere near the handle of the Big Dipper. The post Arcturus, brighte...
This Week's Sky at a Glance, May 29 – June 7
Venus and Jupiter grab your eyes in the west in late twilight. The Summer Triangle marks the dark in the east. So will the subtler Milky Way once the glary Moon is gone. The post T...
The 1919 solar eclipse that proved Einstein right
During a May 29, 1919, solar eclipse, astronomers saw the sun bend starlight, proving Einstein's general relativity and catapulting him to rock star fame. The post The 1919 solar e...
Skywatching in June 2026
What’s up in the day and night sky in June 2026, including the June solstice and a Venus-Jupiter-Moon-Mercury line-up.
Lost in the Star Clouds — A Milky Way Odyssey
I share my "discovery" of a new Milky Way star cloud that's been staring at me for ages. The post Lost in the Star Clouds — A Milky Way Odyssey appeared first on Sky & Telescope .
Your Moon Guide for June 2026
Discover the Moon phases for June, including the Moon meeting up with Mercury, Jupiter, and Venus.
NASA's Psyche Sends Back Amazing Images of Mars
NASA’s Psyche asteroid mission made a course adjustment via a flyby past Mars en route to its final destination. Here's what it saw. The post NASA's Psyche Sends Back Amazing Image...
The Astronomical Imbalance Hidden Inside Manhattanhenge
It's Manhattanhenge: the time of year when the setting Sun aligns perfectly with Manhattan’s street grid.
This Week's Sky at a Glance, May 22 – 31
Venus and Jupiter — the Evening Star and the False Evening Star — draw closer together in the western twilight and point down to Mercury. The waxing Moon shows off its rich telesco...
Nereid Could be Neptune’s Only Original Moon
New research suggests that Triton — or a Triton-like object — might have disrupted Neptune's original moon system. Nereid might be the sole survivor. The post Nereid Could be Neptu...
How Jupiter’s Moon Ganymede Melted Its Core
A new model explains how Ganymede got its molten core — which in turn has given Jupiter's largest moon its magnetic field. The post How Jupiter’s Moon Ganymede Melted Its Core appe...
SMILE: European Space Weather Mission Launches
An innovative new mission will probe the mystery of how the Earth’s magnetosphere interacts with the solar wind. The post SMILE: European Space Weather Mission Launches appeared fi...
What's Feeding Our Supermassive Black Hole?
Astronomers have identified the likely source of gas that flows into the maw of the Milky Way’s central black hole, Sagittarius A*. The post What's Feeding Our Supermassive Black H...