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Canadian astronaut Chris Hadfield holds up two objects that look like grenades as part of an April Fools' Day prank. (Credit: Canadian Space Agency/Chris Hadfield ) April 1, 2013. ( They're actual air sampling devices.) Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp

On April 1, 2004 Children's BBC announced that astronomers had decided to rename the planets in the Solar System after characters from the Lord of the Rings. Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp

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In Pictures: The life of Sir Patrick Moore

Sir Patrick never had any formal training and always described himself as an amateur astronomer. He had telescopic equipment in the garden of his Sussex home from which he monitored the night's sky.

Multiple frame picture of a meteoroid falling? Taken from the helmet camera of a Norwegian skydiver who was narrowly missed by the rock. Coming so close to April 1st, it sounds like a slightly belated April Fool. Experts examined video footage and said it was consistent with a meteoroid. But later it looked more likely that it was a piece of gravel in the parachute. (Credit & copyright: Anders Helstrup) Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp

A New Constellation. April 1, 2003 [Credit: Hugo E. Schwarz (CTIO), NOAO] APOD reported that a new constellation was surprising star gazers. "Ollie the Owl has suddenly started dominating the southern hemisphere.” The bird perching on the Tololo All Sky Camera, which would have been funnier if the bird hadn't scratched the plastic dome. Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp

185 million and 20 years to prove life/water on #Mars, I don't think so. A buck fifty and 2 seconds, there ya go. Now where's my Nobel Prize?

Happy April Fool's Day from APOD. Suiting Up for the Moon: Robert Nemiroff (Michigan Tech. U.): How will cows survive on the Moon? Lunar Grazing Module (LGM), a multi-purpose celestial bovine containment system.

Chris Hadfield's grand April Fools' Day finale shows him posing with an alien that just stopped by the station to say hi. "I don't know what it is or what it wants, but it keeps repeating 'Sloof Lirpa' over and over. Alert the press." (April 1, 2013) Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp

BBC Newsfrom BBC News

In Pictures: The life of Sir Patrick Moore

Sir Patrick Moore (1923 - 2012). British astronomer, broadcaster and writer. Many astronomers - professional and amateur alike - credit Moore with getting them interested in astronomy. His 1987 April Fool about the Jovian-Plutonian Gravitational Effect was a classic, and mocked a popular disaster book of the time. Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp

Multiple frame picture of a meteoroid falling? Taken from the helmet camera of a Norwegian skydiver who was narrowly missed by the rock. Coming so close to April 1st, it sounds like a slightly belated April Fool. Experts examined video footage and said it was consistent with a meteoroid. But later it looked more likely that it was a piece of gravel in the parachute. (Credit & copyright: Anders Helstrup) Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp

Sir Richard Branson flying the Virgin Galactic flag. On April 1, 2011 he announced that he had bought Pluto and had a plan to get it reinstated as a planet. He said, "Virgin has expanded into many territories over the years, but we have never had our own planet before. This could pave the way for a new age in space tourism." Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp

Asteroid Ida and its satellite Dactyl. Image made from data collected by the spacecraft Galileo on its close approach to the asteroid (1993-08-28). Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp

New Lunar Grazing Module (LGM), “a multi-purpose celestial bovine containment system” according to APOD. APOD admits that there aren't any plans to launch cows into space, So maybe that “the cow jumped over the Moon” story was an April Fool. Supposedly, it's an art work named "Mooooonwalk" on display at a popular science museum, but which one? (Image Credit & Copyright: Robert Nemiroff) Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp

A New Constellation. April 1, 2003 [Credit: Hugo E. Schwarz (CTIO), NOAO] APOD reported that a new constellation was surprising star gazers. "Ollie the Owl has suddenly started dominating the southern hemisphere.” The bird perching on the Tololo All Sky Camera, which would have been funnier if the bird hadn't scratched the plastic dome. Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp