The Christmas tree cluster, also known as galaxy cluster MACS0416, is located about 4.3 billion light-years from Earth. It got its name from the flickering, colourful lights found within it ✨ | New Scientist

🎄✨ **How many cluster lights do you need to light a 6.5-foot Christmas tree?** Spoiler: it’s _three_ — and here’s exactly how you do it! 💡 Start **at the top** of the tree with the connector end of the first 49.5 ft strand and work my way **down using my zig-zag lighting technique**. When that strand runs out, connect the **second strand** and keep going down the tree. At the bottom, use the **extra length** to wrap around the back for full coverage — that’s the strand that plugs into the outl