Tag archives: astronomy
By Matin Durrani at Sierra Negra, Mexico
Just as my Physics World colleague James Dacey mentioned earlier, neither of us felt super-wonderful yesterday visiting the Large Millimeter Telescope (LMT), which sits at a height of 4600 metres above sea level. Spectacular though the facility is, the air pressure is roughly 60% of that at sea level and there is so little oxygen that even walking up a flight of stairs made me feeling pretty light-headed.
So, James and I were both quite glad to descend with LMT director David H Hughes to a height of 4100 metres, where it was time to visit another leading Mexican astronomy facility – the High-Altitude Water Cherenkov (HAWC) gamma-ray observatory.
By James Dacey at Sierra Negra, Mexico
Friday was the final full day of the Physics World Mexican adventure and we ended with a breathtaking experience, quite literally.
Matin and I rose early in Puebla to travel over a hundred kilometres east to the ominously named Sierra Negra volcano. This extinct beast is home to two of Mexico’s finest astrophysics facilities.
By Michael Banks
The telescope marked the 400th anniversary of Galileo’s first telescope, which he presented to policy-makers from the Venetian Republic on 25 August 1609.
By James Dacey
It’s been a great week for birds – or at least those flying over the state of New York – after state governor Andrew Cuomo pledged to create safer migration routes for our feathered friends. All state buildings will now have to comply with a national US initiative that seeks to curb levels of light pollution, which can disorient birds and lead to huge numbers of avian deaths by “fatal light attraction”.
Many species of bird rely on the light from star constellations to help them navigate during spring and autumn migrations. Unfortunately, artificial light sources can throw the animals off course, and light reflected from glass can cause the birds to smack into windows, walls, floodlights and other hard surfaces. It is estimated that as many as a billion birds succumb to this cruel end each year in the US alone, according to the US Department of Agriculture.
By Tushna Commissariat
25 years ago today, the ESA/NASA Hubble Space Telescope (HST) was launched aboard the Discovery space shuttle and since then, it has changed the face of observational astronomy as we know it; taking millions of people worldwide from their homes to the most distant and far-flung reaches of the universe and the imagination. The telescope has also been instrumental in some of the biggest, Nobel-prize-winning discoveries in physics in the past two decades, including that of the accelerating expansion of the universe. The stunning image above of the giant cluster of nearly 3000 stars dubbed “Westerlund 2″ was especially released yesterday to celebrate Hubble’s 25th anniversary. The stellar nursery is difficult to observe because it is surrounded by dust, but Hubble’s Wide Field Camera 3 peered through the dusty veil in near-infrared light, giving astronomers a clear view of the cluster. Once you are done staring in awe at the image, watch the short video below, put together by NASA on the HST’s lifetime.
By Hamish Johnston and Tushna Commissariat
As it’s Good Friday today, it can only mean that this week’s Red Folder will include a selection of the best physics-related April Fool jokes from earlier this week. Fermilab’s daily e-bulletin Fermilab Today had an entire joke edition up in the morning – their lead story was probably our favourite as the lab announced its new breakfast cereal dubbed “Neutrin-Os”, but their new day spa sounds pretty good too. CERN went for the funny if slightly obvious Star Wars joke, confirming the existence of the Force, but a slightly more subtle joke came earlier in the week from CERN Bulletin, which ran a story about CERN’s computer-security department handing out prizes for best password – we are still not quite sure if they were joking or not! Astronomy Picture of the Day had a truly fantastic image (see above) of a Lunar Grazing Module described as a “multipurpose celestial bovine containment system”.
By Tushna Commissariat and James Dacey
The south-west of England is not exactly known for its sunny skies at this time of year, so many of us in Bristol – home to Physics World HQ – had steeled ourselves to miss out on today’s solar eclipse, which coincidently is on the first day of spring. So, we were rather overjoyed when the Sun shone through the sparse cloud cover for nearly an hour of the celestial treat. While today’s eclipse was technically visible to anyone in North Africa and Europe, totality was only visible to those lucky few who happened to be on the Faroe Islands (where it was actually cloudy for most of the time) and in Svalbard in northern Norway. Here in Bristol, the eclipse peaked at about 9.30 a.m., when 87% of the Sun’s light was blocked by the Moon.
By James Dacey
On Friday, our old friend the Moon will swing by to remind us that she’s not just there to reflect the Sun’s light; she can sometimes block it out too. A total solar eclipse will be visible to those lucky few people living in the Faroe Islands or the Norwegian archipelago of Svalbard. Many others across Europe, North Africa and Russia will be treated to the (almost as good) spectacle of a partial solar eclipse.
By Tushna Commissariat
In recent years, science and science fiction have come together in cinema to produce a host of rather spectacular visual treats, the best of the lot being Christopher Nolan’s epic Oscar-nominated film Interstellar. That actual science has played a major role in film is pretty well known, thanks to the involvement of theoretical physicist Kip Thorne, who was an executive producer for the project. But in a near-cinematic plot twist, it has emerged that Thorne’s work on trying to develop the most accurate and realistic view of a supermassive black hole “Gargantua” has provided unprecedented insights into the immense gravitational-lensing effects that would emerge if we were to view such a stellar behemoth.
By Susan Curtis in Baltimore, US
After two days of getting to grips with biophysics – see here and here for my experiences – I was ready for a change of scene. And a visit to the Space Telescope Science Institute (STScI), co-located with the Johns Hopkins University in Baltimore but operated on behalf of NASA, was just what I needed.
The STScI is home to many of the scientists and engineers who made the Hubble Space Telescope possible, and who have been working for many years to design the optics and instrumentation for its successor – the James Webb Space Telescope (JWST), which is due to be launched in 2018. The institute also runs the science operations for Hubble and soon will for the JWST, providing software tools for astronomers to make their observations and processing the raw data acquired by the onboard instruments to make it ready for scientific analysis.