esa-spaceweather 
The Sun sits about 93 million miles (150 million kilometers) from Earth, and when it erupts, different types of solar storms take wildly different amounts of time to cover that distance. If you have ever wondered how long does it take solar storms to reach earth, the short answer is anywhere from 8 minutes to … Read more
On the night of May 10, 2024, farmers across the American Midwest looked up and saw something breathtaking. The aurora borealis painted the sky in vivid reds and greens, visible as far south as Florida and Texas. But the same cosmic spectacle that lit up the heavens was quietly wreaking havoc on the ground. GPS-guided … Read more
On the morning of September 1, 1859, a British astronomer named Richard Carrington watched something extraordinary through his telescope. Within hours, telegraph operators across the globe were getting electric shocks, their equipment was sparking fires, and the northern lights were visible as far south as Cuba and Hawaii. That event, now called the Carrington Event, … Read more
If you have ever pointed your Newtonian reflector at a planet and seen a blurry, smeared mess instead of crisp rings and sharp detail, your telescope probably needs collimation. Learning how to collimate a Newtonian reflector telescope is the single most important skill any reflector owner can develop. It is also the step that beginners … Read more
Setting up an equatorial mount for the first time can feel like assembling furniture without the instructions. You have a pile of parts, a counterweight that looks suspiciously heavy, and a sky full of stars waiting to be observed. If you are wondering whether you will ever get this thing working, the answer is yes, … Read more
Every August, I pack up my gear and head somewhere far from city lights to watch one of nature’s most spectacular shows. The Perseid meteor shower delivers up to 100 meteors per hour at its peak, and with the right planning, you can experience it under near-perfect conditions. But here is the catch that trips … Read more
The Sun is not a steady, unchanging light in the sky. It breathes, pulses, and cycles through periods of violent activity and eerie calm on a rhythm that scientists have tracked for over two centuries. This rhythm is the 11-year solar cycle, and understanding how it builds toward its explosive peak, known as solar maximum, … Read more
Every day, solar flares and geomagnetic storms silently shape the conditions of radio communications across the globe. If you have ever experienced sudden HF radio signal loss or mysterious GPS drift during what seemed like clear weather, space weather was likely the cause. The NOAA Space Weather Scales for Radio exist to make these invisible … Read more