|
Astronomy Picture Of the Day (APOD)
The Seasons of Saturn
5.04.2003
Since Saturn's axis is tilted as it orbits the Sun, Saturn has seasons, like those of planet Earth ... but Saturn's seasons last for over seven years. So what season is it on Saturn now? Orbiting the equator, the tilt of the rings of Saturn provides quite a graphic seasonal display.
Clusters and Nebulae of the Hexagon
4.04.2003
At first, the bright stars of the large asterism known as the (northern) Winter Hexagon might be hard to pick out in this gorgeous deep sky mosaic from December 2002. But placing your cursor...
Jupiter in the Hive
3.04.2003
If you can find planet Jupiter in tonight's sky, then you can also find M44, popularly known as the Beehive star cluster. In fact, with a pair of binoculars most casual skygazers should find it easy to zero in on this celestial scene.
V838 Light Echo: The Movie
2.04.2003
What caused this outburst of V838 Mon? For reasons unknown, star V838 Mon's outer surface suddenly greatly expanded with the result that it became the brightest star in the entire Milky Way Galaxy. Then, just as suddenly, it faded.
A New Constellation Takes Hold
1.04.2003
A new constellation has taken hold of the sky, much to the surprise of many sky gazers. The constellation of Ollie the Owl has suddenly started dominating the southern hemisphere, as shown above. The constellation is taking the place of Wrinkles the Rhinoceros, who was unexpectedly voted off they sky by the other constellations.
Mt Etna Lava Plumes
31.03.2003
Mt. Etna has been erupting for hundreds of thousands of years. Located in Sicily, Italy, the volcano produces lava fountains over one kilometer high. Mt. Etna is not only one of the most active...
Beijing Ancient Observatory
30.03.2003
Did observatories exist before telescopes? One example that still stands today is the Beijing Ancient Observatory in China. Starting in the 1400s astronomers erected large instruments here to enable them to measure star and planet positions with increasing accuracy.
The Shadow of Phobos
29.03.2003
Hurtling through space above the Red Planet, potato-shaped Phobos completes an orbit of Mars in less than eight hours. In fact, since its orbital period is shorter than the planet's rotation period, Mars-based...
1006 AD: Supernova in the Sky
28.03.2003
A new star, likely the brightest supernova in recorded human history, appeared in planet Earth's sky in the year 1006 AD. The expanding debris cloud from the stellar explosion is still visible to modern astronomers, but what did the supernova look like in 1006?
Light Echoes from V838 Mon
27.03.2003
Nominated for most mysterious star in the Milky Way, V838 Monocerotis briefly became one of the brightest stars in our galaxy. Its outburst discovered in January 2002, observations have indicated that V838 Mon somehow...
|
January February March April May June July August September October November December |
|||||||||||||||||||||||||||||||||||||||||||||||||