Mars now appears bigger through a telescope than it will again until 2016.
It's tricky deciding when to post an observing story on the Web.
I'm beginning to take Comet Holmes for granted.
Comet 8P/Tuttle is now near its peak. Although nowhere near Comet Holmes in total brightness, its light is concentrated in a much smaller area, making it considerably more prominent when viewed from typical suburban locations.
As the first images are released from Messenger's flyby of the innermost planet, previous ground-based observations are proving to be surprisingly accurate.
An 800-foot-wide chunk of rock will pass less than a half million miles from Earth on the night of January 28th.
It was faint, and it zipped across the sky at 3° per hour but 2007 TU24 could be spotted with a good scope if you knew where and when to look.
The sky's two brightest objects (aside from the Sun and Moon) are rapidly approaching each other in the pre-dawn sky.
Comet Holmes is greatly dimmed from its glory days last fall, but this week it's passing the photogenic California Nebula.
If you have a solar filter or another way to safely view the Sun, be sure to check out the latest group of sunspots marching across its disk.
This pearly glow is surprisingly easy to see if you know what to look for.
Don't miss the evolving sunspots now crossing the solar disk.
Did you know that Venus is still visible in the morning sky in April 2008?
The occultation of the Pleiades by the crescent Moon on April 8th was plagued by haze in Boston, but magnificent nonetheless.
It's extremely unusual for a star that's visible to the unaided eye to be momentarily blotted out by a chunk of rock flying through outer space. But that's what's going to happen early on the morning of Thursday, April 17th, over the most densely populated section of the United States.
Download your free PDF chart to locate the ex-planet Pluto in 2008.
Mercury is normally elusive, but it's putting on an extraordinarily good evening show for observers at mid-northern latitudes from late April through mid-May 2008.
Comet C/2007 W1 (Boattini) has reached 5th magnitude as of early June. It's now visible only from the Southern Hemisphere. When it reappears for northerners in July, will it be naked-eye?
For 18 minutes on the night of May 21-22, the King of Planets will be missing his entire court as all four Galilean satellites disappear from view.
The Red Planet travels through one of the biggest and brightest star clusters in the sky from May 21st to the 24th. As a warm-up, stargazers watched Mars pass a hair's-breadth north of 5th-magnitude Eta Cancri on the evening of May 19th in easternmost America and the morning of the 20th in western Europe.
Every evening in August and September 2008, just after sunset, four planets and two first-magnitude stars combine to form fascinating and ever-changing patterns.
Comet Boattini, now faintly visible to the unaided eye from sites without light pollution, is climbing rapidly higher in the Northern Hemisphere's dawn sky.
Jupiter's newest red spot was disrupted during its encounter with the Great Red Spot and Oval BA, but appears to be reforming.
The King of Planets has made a dramatic entrance into the early evening sky. Don't miss your chance to see it while it's big and bright!
Earth's sister planet has emerged from behind the Sun for a low evening apparition. See how early you can spot it in the twilight.