What causes the Northern and Southern Lights?
The famous Northern and Southern Lights — Aurora Borealis and Aurora Australis for those Latin lovers among us — are […]
What causes the Northern and Southern Lights? Read More »
The famous Northern and Southern Lights — Aurora Borealis and Aurora Australis for those Latin lovers among us — are […]
What causes the Northern and Southern Lights? Read More »
The “Moon illusion,” in which the Moon appears larger than normal when close to the horizon, is not the result
Why does the Moon look bigger at the horizon? Read More »
While no direct link between sunspots and Earthly events, such as volatile stock markets, has ever been found, extremes in
Can solar flares and sunspots affect Earth? Read More »
Of course, the nearest star to Earth is the one we see every day — our dear old Sun. At
What is the nearest star? Read More »
Most estimates place the number of stars in our galaxy at between 100 billion and 500 billion.
How many stars are in the Milky Way? Read More »
The Milky Way’s disk spans at least 100,000 light-years and probably contains several hundred billion stars, which makes our home
How big is our galaxy? Read More »
Quite a few. Most estimates place the number of galaxies at around 100 billion. Most of those galaxies are little
How many galaxies are there in the universe? Read More »
The largest visible-light telescope currently in operation is at Gran Canarias Observatory, and features a 10.4-meter (34-foot) primary mirror. The
What is the largest telescope? Read More »
The true inventor of the first telescope is somewhat difficult to nail down. However, the first person to apply for
Who invented the telescope? Read More »