Over the weekend, approximately 190,000 people made their way to Worthy Farm in western England to attend the 2009 Glastonbury Festival. Attendees came to see performances at what is billed as "Europe's largest open-air music festival" on many stages over four days - headliners included Bruce Springsteen, Neil Young, and a reunited Blur. Rainy weather did little to dampen the mood, as attendees enjoyed themselves in tent cities, concert performances, dance tents, and the surrounding countryside of Somerset, England. Collected here are a handful of images from this year's festival. (33 photos total)

Earlier this week, NASA released an amazing photograph of an eruption of Sarychev Peak Volcano, taken by astronauts aboard the orbiting International Space Station (ISS). Seeing that great photo prompted me to dig into the archives and see what other imagery I could find from recent NASA archives. Collected here are a handful of photographs of Sarychev Peak Volcano, and more, taken by astronauts aboard the ISS over the past few months. (35 photos total)

South Africa is currently hosting the 2009 FIFA Confederations Cup, an international soccer tournament held every four years. The Confederations Cup is regarded as a dress rehearsal for the 2010 FIFA World Cup, also hosted by South Africa - the first World Cup to be held in Africa. Expectations are high as preparations, stadium construction and planning for both tournaments have recently picked up pace. With soccer fever sweeping through the country, you'll find here some recent scenes of South Africans enjoying football as both participants and fans. (28 photos total)

In the ten days since Iran's disputed presidential election, street demonstrations have taken place every day. Iranian citizens, supporters of opposition candidates, continue to take to the streets and document what they encounter there, despite explicit government bans, the danger of arrest (many hundreds placed in custody), or possible physical harm (at least 19 deaths so far). Iranian officials maintain their stance that Mahmoud Ahmadinejad was the undisputed winner, and have increased restrictions and pressure on opposition members, protesters, foreign media and communication networks as they work to regain control. President Barack Obama recently stated that the government of Iran should "recognize that the world is watching." Many of the photographs here were taken and transmitted at great risk in the past week, in the hopes that others would be able to see and bear witness. [ previously on Big Picture: 1, 2, 3 ] (38 photos total)

We humans are natural dancers. Dances can be celebrations, or for praise, or for an audience - or just a simple act of letting the rhythm move your body. Dancers can communicate ideas, preserve cultural identities, strengthen social bonds, or just have a lot of fun. Collected here are recent photographs of us, human beings around the world, professional and amateur, in motion for all of the reasons above and more. [See also: Dance around the world, part II] (39 photos total)

Relations between the Israeli government and the Obama administration have become tense lately over the issue of growing Israeli settlements in the West Bank. Nearly 300,000 Israelis now live in such settlements, alongside some 2.5 million Palestinians. The tense disputes over the settlements touch on religious and historical claims, local and international laws, and, of course political disagreements. The settlements range in size and permanence from "wildcat" outposts made of plywood shacks to established cities of tens of thousands. The international community views over 100 of the settlements as illegal under international law. Despite calls from the U.S. for a complete freeze on expansion, Israeli Prime Minister Benjamin Netanyahu said that, though Israel would not build any new settlements and would dismantle unauthorized outposts, it would still allow building within existing settlements to accommodate "natural growth." Collected here are some scenes from West Bank settlements over the past few months. (37 photos total)

After the relatively free (if sporadic) flow of news, tweets, video and photographs from Iran the past several days, today saw a tighter clampdown, with the government officially banning foreign media from covering rallies and taking further efforts to block online communications. Though photographs from inside Iran are now more rare, there are still a few available. Collected here are three mini-collections: images of reactions from Iranians abroad and the international community, images of pro-Ahmadinejad rallies from Iran (allowed under current restrictions), and several photos from continued rallies held today in support of reformist Mir Hossein Mousavi. (27 photos total)

Following up from last Friday's entry about Iran's Presidential Election, Tehran and other cities have seen the largest street protests and rioting since the 1979 Iranian Revolution. Supporters of reform candidate Mir Hossein Mousavi, upset at their announced loss and suspicions of voter fraud, took to the streets both peacefully and, in some cases, violently to vent their frustrations. Iranian security forces and hardline volunteer militia members responded with force and arrests, attempting to stamp out the protests - meanwhile, thousands of Iranians who were happy with the election outcome staged their own victory demonstrations. Mousavi himself has been encouraging peaceful demonstrations, and called for calm at a large demonstration today (held in defiance of an official ban), as Iran’s supreme leader Ayatollah Ali Khamenei has just called for an official inquiry into accusations of election irregularities. (Update: several photos of injuries from gunshots at today's rally added below) (38 photos total (plus 3))

Iranians went to the voting booth today, Friday, June 12th, for their 10th presidential election since the 1979 Islamic Revolution. Their decision today is largely whether to keep hard-line president Mahmoud Ahmadinejad in power for four more years, or to replace him with a reformist more open to loosening the country's Islamic restrictions and improving ties with the United States. Ahmadinejad's leading opponent is Mir Hossein Mousavi, a former Prime Minister of Iran. Mousavi's campaign was propelled in recent weeks by young voters using high-tech campaign tactics (over 66% of Iranians are under the age of 30). Iran's presidential elections are tightly controlled, and, once elected, the office holder has limited power, but it remains the highest position determined by popular vote. Collected here are several photos from the past few weeks in Iran. (35 photos total)

According to Pakistani authorities and the UN, at least 3 million internally displaced persons (IDPs) have now been registered as a result from recent fighting and on-going military operations against the Taliban in Pakistan's Swat, Buner, and Lower Dir districts. Refugee families are often made up of only women and children, the older men staying behind to care for their homes and crops. UN humanitarian chief John Holmes issued a desperate appeal for hundreds of millions of dollars to help those who have fled the war, warning that the U.N. can only sustain its current aid efforts for one month. Photographers in the area have captured many powerful images of those affected, some of the most striking focused on children, from which I've collected 38 here for you. (38 photos total)

The planet Mercury is the smallest of the inner planets (4,880 km/3,032 mi in diameter), and the closest to the Sun (58 million km/36 million mi - or 3.2 light minutes). It was visited by the Mariner 10 spacecraft twice in the 1970s, and about 45% of the surface was mapped. On August 3rd, 2004, NASA launched a new mission to Mercury, the MErcury Surface, Space ENvironment, GEochemistry and Ranging probe (or MESSENGER). MESSENGER is now in the last stages of multiple gravity-assist flybys of Earth, Venus and Mercury, en route to an insertion into orbit around Mercury in March of 2011. In just two flyby encounters, MESSENGER has already greatly increased our knowledge about Mercury's surface features. As you look at Mercury in the new images below, keep in mind that it has minimal atmosphere, gravity about 1/3 of Earth's, and surface temperatures ranging from -183 C (-297 F) in some polar craters to 427 C (801 F) at high noon (Mercury's solar day lasting 176 Earth days). (20 photos total)

Yesterday, June 4th, 2009, marked the 20th anniversary of the military crackdown on student protesters gathered in Tiananmen Square in Beijing, China. Beginning in April of 1989, thousands of students and other citizens started gathering in groups large and small, protesting many issues, centered on a desire for freedom and democratic reform. By mid-May of 1989, hundreds of thousands of protesters occupied the square, staging hunger strikes, and asking for dialogue. Chinese authorities responded with a declaration of martial law, and sent soldiers and tanks from the People's Liberation Army, preparing to disperse the crowds. Late on June 3rd, 1989, the tanks and armored personnel carriers rolled into the square, killing and wounding many, mostly civilians - estimates vary widely, from several hundred to several thousand dead. The first 17 photos below were taken in 1989, the rest are from this year, as people remember the events, the ideals, and the fallout from that fateful day. (32 photos total)

Cyclone Aila began as a disturbance on May 21 in the Bay of Bengal, strengthening quickly to a Tropical Cyclone with windspeeds gusting up to 120 km/h (75 mph). Aila made landfall soon after, bringing heavy rains, wind, and an enormous storm surge of seawater that pushed inland, damaging or destroying hundreds of thousands of homes in Bangladesh, India and Myanmar. Over 300 people are confirmed to have died, with more than 8,000 still missing. Surviving residents are now receiving aid, mourning the lost, beginning to rebuild - and some are leveling criticism at their own governments, asking why stronger storm defenses were not in place. According to the Associated Press, some 2.3 million people were affected by Aila. (29 photos total)

In East Java, Indonesia lies Kawah Ijen volcano, 2,600 meters tall (8,660ft), topped with a large caldera and a 200-meter-deep lake of sulfuric acid. The quietly active volcano emits gases through fumaroles inside the crater, and local miners have tapped those gases to earn a living. Stone and ceramic pipes cap the fumaroles, and inside, the sulfur condenses into a molten red liquid, dripping back down and solidifying into pure sulfur. Miners hack chunks off with steel bars, braving extremely dangerous gases and liquids with minimal protection, then load up as much as they can carry for the several kilometers to the weighing station. Loads can weigh from 45 to 90kg (100 - 200 lbs), and a single miner might make as many as two or three trips in a day. At the end of a long day, miners take home approximately Rp50,000 ($5.00 u.s.). The sulfur is then used for vulcanizing rubber, bleaching sugar and other industrial processes nearby. (22 photos total)