A controversial 1950 book by Immanuel Velikovsky declared that our neighbor world was spawned by Jupiter 3,500 years ago and nearly struck Earth — twice.
New interpretations of oral accounts by Aboriginal Australians show that they included references to the variability of red giants Antares, Betelgeuse, and Aldebaran.
Make a connection to a time when stars were used to track seasons and predict natural events by watching the heliacal rising of Sirius.
Celebrate the anniversary of a revolutionary discovery by gathering with other astronomers to observe planetary nebulae in August's evening sky.
Forty years after the last human visitors departed the Moon aboard Apollo 17, space historian Andrew Chaikin talks about why we should return.
The colorful history of one of astronomy's rarest events — the transit of Venus — was discussed at the recent IAU conference in Beijing, China.
Pluto, quasars, and total solar eclipses over Easter Island were just a few of the topics that came up at the close of the first week of the international astronomy conference in Beijing.
Read the third and final chapter of transits of Venus in history, as the transits went from being a crucial scientific measurement to an observing curiosity.
Read the full account — in three parts — of the history behind the upcoming transit of Venus.
Read the next chapter in the history of the transit of Venus, the fantastic voyages in 1761.
The genius who designed the modern Schmidt-Cassegrain telescope, and then shaped its role in changing the face of amateur astronomy, died on Tuesday.
Twenty-five years ago, a star exploded in the Large Magellanic Cloud. The first easily seen supernova since before astronomers turned telescopes to study the heavens, the explosion heralded a new age of astronomy.
More than 4½ centuries after his death in 1543, Nicholas Copernicus received a hero's acclaim as his remains were interred in Frombork, Poland.
In case you haven't heard, there's a rumor going around that the world will end on December 21, 2012. Did the Mayans really predict the world would end then? Is the astronomy for real? Do we have anything to worry about? Not surprisingly, the answers are "no," "no," and "of course not."
During his time at Caltech in the 1930s, Russell Porter cast this beautiful sundial to adorn the campus. But it was stolen sometime during the 1970s — do you know where it is?
On February 12th, the United States celebrates the 200th birthday of the country's 16th president. Discover how celestial events highlighted his life.
The U.S. space agency was founded 50 years ago today. You can celebrate by finding your favorite NASA photograph.
In 55 BC, when Julius Caesar and his fleet approached the white cliffs of Dover on the British coast, he faced unexpectedly strong tides. Researchers from Texas State University have used tidal measurements and other astronomical clues to revise the exact date of the historic landing.
Google's interactive star map has a bunch of new features.
A crater on Mars has been officially named for the American scientist Charles F. Capen.
Finally, a live webcast of the solstice sunrise.
A new DVD entertains with a 50-year-old look at Mars.
A magnificent rendezvous between the planet of love and the bright orb of the Sun. One of the most celebrated phenomena in astronomy. A sight unseen by anyone alive today. With superlatives like these describing a transit of Venus, it is little wonder that astronomers are eagerly awaiting the next one — June 8, 2004.…