With little or no moon to ruin the show, this is a great year for watching the Perseid meteor shower. It’ll peak on the mornings of August 11, 12 and 13.
This galaxy is very distant. It shines with a luminosity of some 300 trillion suns. It’s one of a new class of objects discovered via NASA’s WISE mission.
Here’s a collection of 10 unexpected, intriguing facts about the stars of our universe – including our sun – that you probably didn’t know!
Best time to see Saturn in 2015 is here! Instructions for finding this beautiful golden planet … here.
SpaceX confirmed splashdown of Dragon in Pacific Ocean at 12:42 pm ET (1642 UTC), 155 miles SW of Long Beach, California.
Sailing on sunbeams. LightSail successfully launched May 20 at 11:05am EDT (1505 UTC). Info on how to follow from here, below.
In close-up images via the orbiting Rosetta spacecraft, the rock looks poised like a ballerina, with only a tiny fraction of its surface touching the ground.
The sky’s two brightest planets are getting ready for a spectacular conjunction in late June and early July. Start watching them now! Charts and info here.
On Earth, a fast runner takes a few hours to complete a marathon. On Mars, it took the Opportunity rover 11 years. New short video on Opportunity’s marathon trek.
Europa is thought to have a subsurface ocean. Salt from this hidden sea might be emerging in long fractures visible in the moon’s crust.
Astronomers at Keck Observatory in Hawaii have found a quartet of quasars, embedded in a giant nebula of cool, dense gas. The odds of four of them being so closely packed purely by chance is about 1 in 10 million.
We can’t always say for sure what you saw in the night sky. But it might have been a flare from an iridium satellite.
This one-minute animation shows the shock wave that is created when the core of a massive star collapses.
A Blue Moon can be the second of two full moons in a month. Or it can be third of four full moons in a season. Next Blue Moon is the second full moon of July, 2015.
The intriguing cycle of closest and farthest moons. Plus, dates for 2015’s 13 perigees (closest points) and 13 apogees (farthest points).
With its close encounter with Pluto still two months away, New Horizons’ powerful camera has caught a glimpse of tiny moons Kerberos and Styx!
Dates of sun’s entry into each zodiacal constellation and the corresponding ecliptic longitude (sun’s position in degrees, east of the March equinox point).
They believe there’s unexpected dark matter – or black holes – in the mysterious clusters orbiting the center of the giant galaxy Centaurus A.
But, contrary to some media reports, asteroid 1999 FN53 will not “skim” our planet.
Near the end of its mission, the MESSENGER spacecraft revealed Mercury’s magnetic field to be at least 3.7 to 3.9 billion years old, or older.
A dark halo of gas that envelopes our neighboring Andromeda galaxy is 1,000 times more massive than previously measured and stretches halfway to the Milky Way.