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Mars Will Soon 'Reverse Its Course' in the Sky -
First Blue Moon Total Lunar Eclipse in 150 Years Coming This MonthA total eclipse of a "Blue Moon" will occur on Jan. 31 — the first time this has happened since 1866.
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Geminid Meteor Shower Peaks This Week! How to See Year's Best Meteor DisplayThis pre-Christmas display of celestial fireworks is due to reach its peak during the long, dark hours from Wednesday night (Dec. 13) into early Thursday morning (Dec. 14).
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Final New Moon Sunday Starts the Countdown to the Great American EclipseThe total solar eclipse is coming across the United States on Aug. 21; early Sunday morning (July 23) marks the first new moon before the dramatic event.
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'Ring of Fire' Eclipse Will Be Visible from Southern Hemisphere SundayThis Sunday (Feb. 26), a "ring of fire" solar eclipse will be visible from parts of South America and Africa. Here's how this kind of eclipse differs from a total solar eclipse.
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The Truth About Astrological SignsA news story began furiously circulating about a month ago about how NASA had just changed the signs of the Zodiac.
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Harvest Full Moon Rises Tonight — with a Subtle Lunar EclipseThe full moon known as this year's Harvest Moon will rise tonight (Sept.16) and will be shaded by a subtle type of eclipse for some skywatchers in Africa, Asia and Australia.
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No, the Moon Won't Turn Green on WednesdayHave you read that the moon will turn green on April 20 or May 29? Don't believe it.
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Get Ready: Mars Reverses Its Course In the Sky SaturdayLook up this weekend to catch bright Mars as it begins a zigzag detour across the spring sky.
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Easter's Early Arrival: How the Moon Shapes the DateThis year, if you have not already noticed, Easter is going to arrive rather early: Sunday, March 27. The date of Easter has a curious link to the moon's phases.
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Leap Day: The Story Behind This Quirky Calendar EventMonday is Feb. 29 – the bissextle or "leap day," an artifact that dates back to the year 46 B.C. Find out how this calendar oddity came to be.
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Hoax Exposed: No, Earth Will Not Go Dark for 15 DaysThere is no truth to the claim that the Earth will plunge into 15 days of darkness on Nov. 15. Don't be left in the dark on this space hoax.
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Sunday's 'Supermoon' Total Lunar Eclipse: When and Where to See ItHere's a skywatching guide for the Sept. 27 "supermoon" total lunar eclipse — the first such event since 1982, and the last until 2033.
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Cinco de Mayo Meteor Shower Rains Halley's Comet Bits on Earth: Watch It TonightThe Eta Aquarid meteor shower, produced by debris from Halley's Comet, will peak tonight. Find out where you can see the show, as well as a live webcast hosted by the Slooh observatory.
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Leonid Meteor Shower Forecast: What to ExpectThe Leonid meteor shower of 2014 will peak on Monday and Tuesday (Nov. 17 and 18), but don't expect a dazzling celestial light show. Here's what to expect from the Leonids this year.
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Taurid Meteor Shower Peaks Soon, But Moon Will Dampen DisplayThe Taurid meteors, sometimes called the "Halloween fireballs," are typically at their best from Nov. 5 through Nov. 12. Unfortunately, a bright moon will dampen the display this year.
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Comet Will Buzz Mars Sunday: How to See It in Telescopes -
Blood Moon Weather: Total Lunar Eclipse ForecastWeather prospects for Wednesday's total lunar eclipse are great for observers hoping to catch a glimpse of the 'blood moon' from around the United States.
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Total Lunar Eclipse On Wednesday Will Be a Rare 'Selenelion'Observers of Wednesday morning's total lunar eclipse might be able to catch sight of an extremely rare cosmic sight.
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Pre-dawn SpaceX Launch on Saturday Visible Along US East Coast -
Back-to-Back Sun Storms May Supercharge Earth's Northern LightsPowerful solar flares from the sun this week may amplify the northern lights displays over parts of the northern United States through the weekend, space weather scientists say.
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New Meteor Shower May Spark Meteor Storm Tonight: Watch It Live -
Will New Meteor Shower This Weekend Sizzle or Fizzle?A new meteor shower that will blaze up in the early hours of Saturday morning could be spectacular, if Jupiter's gravity has shepherded particles shed by Comet 209P/LINEAR tightly together.
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Atmospheric Pressure: Definition & FactsAtmospheric pressure is the force exerted against a surface by the weight of the air above the surface.
