Come to San Antonio volcano visitor centre and see La Palma’s “Stonehenge” mark the autumn equinox on Sunday night at 7:30 pm. Stonehenge is a bit of an overstatement, of course, but the modern astronomical marker at the visitor centre works the same way as Stonehenge. As the sun sets at the equinox, the shadow of one stone reaches another. (Different stones make shadows which reach the marker stone at…
Wow! Yes, that’s a real frog, and a real NASA launch, and no, the photo wasn’t retouched. This is NASA’s LADEE heading to the moon “to gather detailed information about the lunar atmosphere, conditions near the surface and environmental influences on lunar dust.” The automatic cameras caught this image at the launch Pad 0B at Wallops Flight Facility in Virginia.” For real. So what’s with the frog? Well, the…
Mars has two moons, Demios is very small – only about 12 km in diameter, and orbits in 30 hours. But since a Martian day is 24 hours, 39 minutes long, Demios isn’t much above synchronous orbit, and it takes 2.7 days to rise in the east and set in the west. From the equator of Mars, it looks about as big as the planet Venus does from Earth. Phobos…
The William Herschel Telescope at sunset. . The William Herschel Telescope was for many years the biggest and best optical telescope in Europe (until GranTeCan opened in 2009). The main mirror is 4.2 m across (165″, or 13′ 9″) which astronomers call “a good light bucket”. It’s rather old as world-class telescopes go, since it opened in 1987, but it still produced excellent science. In fact data from the WHT…
Francisco Sánchez, the founder of the Canarian Astrophysics Institute has resigned at the age of 77. Rafael Rebolo is the new director. Rafael Rebolo is an internationally known astrophysicist who has published over 150 scientific papers, mostly to do with exoplanets and cosmic microwave background. Francisco Sanchez is a hard act to follow. Francisco Sánchez, fundador del Instituto de Astrofísica de Canarias ha jubilado a la edad de 77. Rafael…