01 November 2012, 05:10 PM ET
The discovery comes from observations made by two Venus-observing probes over the course of three decades.
01 November 2012, 10:07 AM ET
This month will see Saturn and Venus come very close to one another in the night sky, the mid-month peak of the Leonid meteor shower, solar eclipse in Australia and more.
01 November 2012, 07:00 AM ET
Titan's glow works a little like a neon sign.
28 October 2012, 01:10 AM ET
Storms can exist on any planet with an atmosphere, even the sun.
26 October 2012, 05:00 PM ET
The rocky, metallic worlds of the inner solar system look quite different from those of the outer solar system, one theory supposes they formed in much the same way. However, a competing theory suggests they may have formed from different components.
11 October 2012, 04:47 PM ET
Although Venus and Earth are nearly twins in size and mass, a pressure cooker atmosphere makes Venus extremely inhospitable. Sulfuric acid clouds swirl about a volcanic surface more than 900° F.
10 October 2012, 11:19 AM ET
The two brightest objects in the sky may be visible as you wait for your train or bus.
09 October 2012, 12:04 PM ET
False-colour image of cloud features seen on Venus by the Venus Monitoring Camera (VMC) on Venus Express is seen in this cool space wallpaper.
05 October 2012, 11:15 AM ET
The 15 countries that make up the ESO help the astronomical organization's mission of scientific inquiry and public outreach in different ways. For example, the VLT uses a German-crafted mirror, polished in France, and assembled in Chile by Italy.
01 October 2012, 05:46 PM ET
Venus and the bright star Regulus are brilliant beacons in the pre-dawn sky.
01 October 2012, 03:55 PM ET
Part of Venus' atmosphere may be cold enough to form carbon dioxide snow.
01 October 2012, 02:00 PM ET
The closest spiral galaxy to our own; a brilliant 'morning star' in the eastern sky; and bits of Comet Halley's tail highlight an eventful month for star gazers.
28 September 2012, 10:16 AM ET
In this superimposed view: Upper Venus = Canberra, Australia and Lower Venus = Svalbard ( Arctic) the planet appears on two different paths. June 5, 2012 was the last time Venus will cross the face of the Sun (as seen from Earth) in our lifetimes.
19 September 2012, 05:38 PM ET
The Pleiades star cluster stands highest in the sky appearing as a close group of bright blue dots.
04 September 2012, 04:26 PM ET
Researchers may be able to use this information to learn more about comets' paths around the sun.
04 September 2012, 11:50 AM ET
This September skywatchers can catch a glimpse of four planets (Venus, Mars, Jupiter, and Saturn) as well as a visual trick in the constellation Capricornus that makes two stars look like one oddly enlongated star.
29 August 2012, 07:01 AM ET
A number of night sky superlatives are overhead now.
28 August 2012, 09:30 AM ET
The brightest planet and the largest star are just the start of the night's sky's extreme objects.
23 August 2012, 11:28 AM ET
This early morning shot of the iconic salt march captures the crescent moon with Jupiter and Venus.
10 August 2012, 08:54 AM ET
The annual meteor shower reaches its high point on August 11-13, 2012. Jupiter, Venus, the crescent moon and red giant star Aldebaron add to the skywatching spectacle.
09 August 2012, 10:19 PM ET
See sky maps to help spot the skywatching events of August 2012.
09 August 2012, 05:30 PM ET
Serene morning image features the crescent moon, Taurus, Jupiter and Venus.
06 August 2012, 08:00 AM ET
Mariner 1 launched for orbiting Venus.
18 July 2012, 06:13 AM ET
Hungarian astrophotographer Tamas Ladanyi captures stunning image of the Venus transit across a melting sun.
16 July 2012, 12:17 PM ET
See spectacular stargazer photos of Jupiter, Venus and the moon shining together in the night sky during July 2012.
14 July 2012, 07:00 AM ET
The trio will be visible in the early morning sky on July 15.
12 July 2012, 05:47 PM ET
Night sky photographer Ajay Talwar shoots bright planets in beautiful conjunction over historic Lodi Gardens in India.
12 July 2012, 10:40 AM ET
See our favorite images of July 2012 skywatching events submitted by SPACE.com readers.
09 July 2012, 04:33 PM ET
Night sky watchers will have a variety of events to enjoy in July 2012.
06 July 2012, 05:13 PM ET
From July through August, planet groupings in the pre-dawn and dusk skies will impress skywatchers around the world.
03 July 2012, 11:05 PM ET
Being awake at dawn has its benefits in July as Venus and Jupiter converge and set the table for a skywatching show that also stars the crescent Moon with Earthshine, a star cluster and more.
10 June 2012, 09:16 AM ET
From complete coverage of Venus crossing the sun to a New York space shuttle, it's been an unforgettable week in space.
09 June 2012, 07:38 AM ET
Astrophotographer Thierry Legault snapped the spectacular image from Australia.
08 June 2012, 06:36 AM ET
Skywatcher P-M Heden took this spectacular photo from Sweden’s capital Stockholm on March 11.
07 June 2012, 03:09 PM ET
See how astronomers at Mount Wilson Observatory's Solar Tower captured the Venus Transit of 2012.
06 June 2012, 06:45 PM ET
Stunning photos of the historic celestial event from Southern California.