Space junk is out of control, scientists say

by Sean McLachlan on

It’s a dilemma faced by every adventure traveler: to find the perfect remote spot untouched by modernity, free from cell phones, television, and trash. Of course there is no such place, not even in space. In fact, the orbital detritus of modern life can be downright dangerous, scientists warn.

A new report from the National Research Council says there are so many bits of trash in orbit, ranging from defunct satellites to fragments like nuts and bolts, that they’re bumping into each other, breaking apart, and making more trash. Around 22,000 large pieces of space junk are tracked from the ground, occasionally prompting the International Space Station to maneuver out of the way, and there are hundreds of thousands of more pieces too small to be detected. It amounts to a cloud of trash surrounding the earth, as this NASA image shows.

This puts current astronauts and future space tourists in peril. With the high velocities objects achieve in orbit, it’s like having hundreds of thousands of bullets flying around the Earth.

And it’s getting worse. The BBC reports two satellites crashed in 2009 and broke apart. Also, the Chinese tested a satellite killer in 2007 that successfully smashed up its target into more than 150,000 pieces larger than a centimeter. The U.S. and Soviet Union tested similar weapons back in the 1960s and 1970s, creating their own clouds of debris.

Several manned spacecraft have been hit by space debris. Two Shuttle missions have had radiator panels in the cargo bay punctured by debris. The International Space Station and Mir have both suffered numerous impacts. Sometimes the damage is caused by natural micrometeorites.

One certain impact by space debris was in 1983 when a fleck of paint smacked into the space shuttle Challenger’s front window and left a crater, as you can see in this NASA image.

If a fleck of paint can do this to the Space Shuttle, imagine what an old rocket booster could do.

Queens Lane, Oxford: a thousand years of history in a single street

by Sean McLachlan on


Most of the time when we travel (or write about travel) we look at the big picture, yet sometimes a single place can sum up the history and character of a city. Queens Lane in Oxford is one of those places. A quiet backstreet linking the two more popular thoroughfares of High Street and Catte Street, it’s overlooked by most visitors. I use it when walking to work at the Bodleian library as a way to avoid the noise and crush of the crowd.

Entering from High Street, you have The Queen’s College on your left. This college was founded in 1341 and is designed in the Italian style by Hawksmoor, one of England’s greatest architects. Like all Oxford colleges it has its own customs and peculiarities. During Christmastide celebrations a boar’s head is carried from the kitchens to the High Table in the dining hall while the college choir sings an old tune. Legend has it that a student of the college was walking in the forest reading Aristotle when he was attacked by a wild boar. He stuck his book in the boar’s mouth and choked the boar to death!

Walking down Queens Lane you can see a gate to another college, St. Edmund Hall, to your right and the church tower of St. Peter’s-in-the-East ahead. St. Edmund is older than The Queen’s College by a couple of generations but the exact date of its founding is a mystery. Go through to gate to see a couple of quiet, ivy-covered quads. St. Peter’s is worth a visit too. This 12th century Norman church is built atop an earlier Anglo-Saxon church. It now serves as the college library and there’s a display of finds from an archaeological excavation into the Anglo-Saxon foundations.

In the churchyard is the grave of James Sadler, a pioneering balloonist who soared into the air over Oxford in 1784, the first Englishman to try a balloon after it had been invented by the French Montgolfier brothers only the year before. Ballooning was dangerous in those early days. Sadler twice landed in the sea and his own son was killed in a ballooning accident. Another time his balloon hit the ground, dragged him for two miles before he was knocked off, and then sailed away again without him. Amazingly, Sadler lived to 75 and died a natural death.

%Gallery-132119%Continuing along Queens Lane you take a right and the path turns into New College Lane. Yes, I cheated with the title of this post. Sue me. New College doesn’t look like much from here, only a heavy oak door under a medieval vault. Go inside and you’ll see one of the five most beautiful colleges of Oxford. New College Lane is narrow and enclosed with high walls turned black from the acid rain caused by Victorian coal smoke and modern car exhaust. The stone used here is very absorbent and pollution is literally eating away at the university.

Another zigzag takes us within sight of Catte Street, the Bodleian Library, and the crowds. Before plunging into the throng, you’ll see an unassuming little house on the right that was once the home of Sir Edmund Halley, graduate of The Queen’s College and the astronomer who proved comets return regularly. He also loved to party, and went on epic pub crawls with Russian Czar Peter the Great when he visited London. Their landlord complained that they tore all the doors off their hinges and shot holes through all the paintings. The house is now a college residence and is famous for its parties. A little room attached to the roof served as Halley’s observatory and it’s rumored that heavenly bodies can still be seen there on Saturday nights.

If you don’t get invited to a private party in Halley’s old place, you can squeeze down a narrow alley and visit the Turf Tavern, a fine old pub. The oldest part of the building dates to the 17th century but there may have been an alehouse here centuries before that. The management claims that this was where Bill Clinton, then a student at Oxford, “didn’t inhale” marijuana. Yeah, sure you didn’t.

The exit of New College Lane takes you under the Bridge of Sighs, which connects two buildings of Hertford College. It’s said to be an imitation of a bridge in Venice of the same name. One local rumor says that when it was built in 1914, the building on one side still didn’t have plumbing while the other did. Since students weren’t allowed to leave their college after hours and usually had a quick pint or three before being locked in, it was a bad deal to be stuck all night in a building with no toilets. The Bridge of Sighs offered a way for students to hurry to the bathroom in the next building without breaking the rules, thus giving a whole other meaning to its name.

Ancient palace discovered in Sudan

by Sean McLachlan on


Archaeologists digging in the ancient city of Meroë in the Sudan have discovered what they believe is a palace dating to 900 BC.

The team discovered the building under the remains of a later palace. It’s believed to be the oldest building yet discovered at the site, which was once the capital of the Kingdom of Kush. Kush had several great cities and exported iron all the way to China. From 747-656 BC, the Kushites ruled Egypt as the twenty-fifth dynasty. The empire lasted from about 1000 BC to 350 AD before being conquered by the Empire of Axum in Ethiopia.

Meroë is one of the greatest archaeological sites in Africa. It has more than 200 pyramids, although they’re smaller than the largest Egyptian pyramids.

For a long time Meroë and Kush were understudied in favor of the more famous Egyptian civilization. Now scholars are beginning to realize that this Sudanese civilization contributed a lot to Egyptian culture.

Meroë is two-and-a-half hours north of Khartoum and it’s feasable to do in a long day trip. If you’re not going to the Sudan, the British Museum in London has a whole room dedicated to this civilization and its art.

Image courtesy Sven-steffenarndt via Wikimedia Commons

Roman bath discovered in York

by Sean McLachlan on


The remains of a Roman bath have been discovered in York in northern England.

Archaeologists made the find while excavating ahead of construction of the new City of York Council Headquarters. York (then called Eboracum) was an important trading center in Roman times. So important, in fact, that it had more than one bath. The image above is from the basement of the Roman Bath pub, where a small museum shows off the remains of another bath.

Based on coins and pottery found at the site, the newly discovered bath dates from the late second and early third centuries AD. The site will be open to the public for free this weekend.

Unlike many Roman cities, York continued to be important mercantile and religious center in the later Anglo-Saxon and Viking periods. The Yorkshire Museum exhibits a huge collection of Viking artifacts from an earlier excavation.

Public bathhouses were very popular in Roman culture. They included cold, warm, and hot pools and places for relaxation and socializing. The best preserved example is at the appropriately named city of Bath, an easy day trip from London.

New discoveries reveal life and times of the Roman Emperor Hadrian

by Sean McLachlan on

The Emperor Hadrian is one of Rome’s most famous emperors, ruling at the height of the Empire from 117-138 AD. His villa just north of Rome is a popular tourist attraction, yet some Italian researchers have discovered what countless visitors never noticed: the buildings are aligned with astronomical events.

On the summer solstice (June 21 this year) light passes through an opening above a doorway and shines on a niche in the opposite wall. The niche probably contained the statue of some deity. This sort of light effect has been found in other ancient sites. Another building is aligned both to the summer and winter (December 21 this year) solstices, during which the light shines through a row of doors.

The effects may have been part of the worship of Isis. Originally an Egyptian goddess, a popular mystery religion grew up around her in the Roman Empire.

Hadrian’s other famous monument, Hadrian’s Wall, is also the site of a recent discovery. At the fort of Vindolanda, dozens of circular huts have been discovered that don’t look like anything the Romans built. In fact, they look like the huts of the tribes living north of the wall in Scotland, outside the direct influence of the Roman Empire. These may have been homes for refugees from friendly tribes fleeing common enemies, perhaps during the invasion of Scotland by Emperor Septimius Severus (ruled 193-211 AD) or the homes of temporary workers who lived along the wall and served the Romans.

For more on Hadrian’s Wall and a hike you can take along the entire length, check out my series on hiking Hadrian’s Wall.

[Photo courtesy Jastrow]