Black Holes Merge: A Historic Spacetime Event

3I/Atlas Video from Japan’s Space Agency

Galaxies on Instagram: "On a clear, dark night with no light pollution, the human eye can see about 2,500 to 3,000 stars at once from any one location on Earth. That’s out of roughly 5,000 to 6,000 visible to the naked eye total (since half the sky is below the horizon). If you use binoculars or a telescope, that number jumps into the hundreds of thousands to millions, depending on the equipment and conditions. But with just your eyes, around 3,000 max is what you’ll see under perfect skies."

Star Walk 2 — Best Astronomy App 💫 on Instagram: "Venus vanishes behind the Moon! 🌘🌟 On September 19, from 10:34 to 14:26 GMT, enjoy the lunar occultation of Venus. Visible to the naked eye, though binoculars make the event even more exciting. Watch the video for details! 👀 #venus #moon #stargazing #StarWalk #astronomy"

Astro Alexandra on Instagram: "TWO comets in the night sky this week alongside the Orionids meteor shower and the new moon! #space #astronomy #nasa #science"

Star Walk 2 — Best Astronomy App  on Instagram: "2025’s First Supermoon!  On October 7, look up to see the year’s first Supermoon, glowing in the constellation Pisces. It will appear about 13% brighter and nearly 7% larger than a typical Full Moon. Check out the video to learn about the Supermoon phenomenon and how to catch the Full Moon at its most magical.  #moon #supermoon #supermoon2025 #fullmoon #StarWalk"

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