Light is the fastest-moving stuff in the universe. It travels at an incredible 300,000 kilometers (186,000 miles) per second. So, in a year, light travels far.
All five visible planets will appear together in the morning sky early next year – from about January 20 to February 20, 2016. That hasn’t happened since 2005.
Here are all the details you need for 2015’s Leonid meteor shower, peaking on the morning of November 18.
The famous Leonid shower is coming up. Follow the links in this post to learn more about meteor showers for the rest of 2015.
We’ve been hearing reports of Taurid fireballs! It’s time to start watching for them. Details on the South Taurid shower, and when to watch.
Venus, Jupiter and Mars light up the predawn. Saturn is visible early in the month, then fades into the sunset glare. Mercury transitions to the evening sky.
If you’re a beginning stargazer or a veteran of thousands of starlit nights, binoculars can be your best friend. Here’s how to get started.
Yes, Halloween is an astronomical holiday.
The Northern Hemisphere’s full Hunter’s Moon for 2015 falls the nights of October 26 and 27. Will it be bigger, brighter, more colorful?
In 2015, diminished tilt of moon’s orbit to Earth’s equator lessens the characteristic effects of the Hunter’s Moon.
Details on the annual Orionid meteor shower. How and when to watch. In 2015, the peak morning is October 21 or 22.
Plenty more great astronomy events coming up this fall and winter! Let an amateur astronomer point out stars and constellations to you.
Longest lunar month of 2015 starts with the October 13 new moon and ends with the November 11 new moon. Learn about the varying lengths of lunar months, here.
The maximum number of Draconid meteors are expected to fall on the evening of October 8 and 9.
The long-lasting South Taurid meteor shower (September 10 to November 20) may produce a “swarm” of fireballs this month or early next month. Watch for them.
It’s the year’s closest supermoon. It’ll undergo a total eclipse. And, for the Northern Hemisphere, the full moon of September 27-28, 2015 is the Harvest Moon.
This is why the moon is so ‘super’ tonight. This post explains lunar perigee and includes dates of all closest and farthest moons for each month of 2015.
Are you planning on watching the September 27-28 eclipse outside? Here are some tips.
Closest supermoon of 2015 coming up. Its pull of gravity will create higher-than-usual tides. But gravity doesn’t affect a human body as much as an ocean tide.
September equinox is Wednesday, September 23 at 8:21 UTC. Autumn (or spring) is here!
The shallower inclination of the moon’s orbital plane, relative to the plane of the Earth’s equator, reduces the phenomenon of the Harvest Moon in 2015.