News Category Archive

Asteroid Hunting

3 Replies Jonny Hankins

Many of you will have seen the video of the meteor that exploded into the atmosphere above Russia last week, and I would just like to offer an overview of the event from a practical scientific prespective.

The meteor was about 15 metres across, and as such too small to detect. As we all saw though a meteor of this size can do extensive damage. It weighed about 7000 metric tonnes, travelling at 18 Km per second and exploded at a height of between 15 and 20 Km. This is pretty close to the ground if you think that an aeroplane flies at about 10Km and we are certainly not dealing with somewhere where nothing happens.

The force of the explosion was about 30 times that of the Hiroshima bomb, a pretty devastating blow by all counts. We should think ourselves lucky that it did not happen over a major city.

Trees blown over after the 1908 impact

Trees blown over after the 1908 meteor impact

In 1908 in Tunguska also in Russia a much larger meteor hit. This one was about the size of the DA14 meteor that flew past Earth later on the same day last week, and it blew trees down over an area of about 2000 square Km. Once again it hit over Siberia so less damage than could have occurred, but if you think that the event of last week over Russia only threw out about 5% of the force of this one than we don’t need much imagination to envisage the possible catastrophe. Several photos are available around the net and I offer one above. There are also plenty of huge craters to see.

NASA have the Near Earth Program, and they have the mission of monitoring the many things that fly close to Earth.

It is not an easy job though as you might imagine, they use ground based telescopes so can only see something that is big enough to reflect enough light, and last week’s hit came directly in line with the sun, so practically impossible to see.

NASA has managed to identify 90% of near Earth asteroids that are more than 1 Km across, and something of this size might threaten life on Earth itself if it hit. There are more than a million near Earth asteroids however that are 20 metres across or more but  very few of these have been identified and mapped.

The B612 Project is hoping to put a telescope into Space before 2018 that will be able to spot something of that size, but until then they will go largely unseen.

Keeping on a related topic last May I put a post up about asteroid mining, and recently the BBC has carried some updates on this project.

It is currently a 2 horse race, but it seems very speculative. And I remember a song about horses of this type.

Stealing Wi-Fi

16 Replies Jonny Hankins

Hey, come here I have something to tell you, in private. Those thieving types who live next door might be stealing your Wi-Fi you know. Not only that but Google maps drive past with their super technology cars and use your Wi-Fi, take information from your computer and all sorts (apparently). And anyone could be getting in, once on the Wi-Fi they can get into your hard disk! Well come here and let me whisper something in your ear…Wallpaper, yes from France. Tres stylish.

Wallpaper that stops Wi-Fi from passing through. You can pay your own connection, and even if you live in a shared house nobody else can get it. Ha Ha student so called friends, you can steal my cheese from the fridge but the real important stuff is mine, all mine. And it doesn’t even block out your mobile phone or the TV signal, how about that for fantastic? And it comes in a lovely snowflake design, perfect for any look, from Abba revival to minimal chic.

Block in Wi-Fi

Signal blocking wallpaper

Take a look at this link here, it’s in French I know but an online translator will help for anyone who doesn’t understand.

CNN have got onto it too, so keep it a bit quiet otherwise everyone will get it, and you will end up walking for miles through the suburbs with your mobile phone looking for someone with open Wi-Fi overspill.

Freedom of Information or Criminals?

9 Replies Jonny Hankins

In this post I would like to tell the stories of two young gentlemen, Aaran Swartz and Bradley Manning.

Many of you will know these names. Aaron is unfortunately all over the web this week due to his recent suicide, and here in Boston there is a lot of soul searching going on.

Aaron Swarz

Aaron Swartz

Aaron started young, at the age of 14 he was part of a working group that developed the RSS system. He was co-owner of Reddit, having been owner of Infogami, a company that merged to form the Reddit that we know today. He was most importantly an online activist, fighting for open access and against the Stop Online Piracy Act.

His activism got him into trouble with the police however. In the first instance he was investigated for publishing documents managed by the Administrative Office of the US Courts. These were public documents but the administrative office charged per page for individuals to see them. Aaron did not believe that this was fair so decided to take the chosen course of action. After an investigation he was not charged however, so no case was ever brought.

His second brush with the law went rather differently however. In 2011 he was arrested and charged (amongst other things) with fraud and unlawfully taking information from a computer. He had allegedly walked into the MIT library, attached his laptop to the system and downloaded 4 million academic articles.

His complaint was that the database holding the articles (JSTOR) were unfairly paying royalties to article publishers and not authors, and in doing so and charging for their service they were restricting public access. JSTOR did not push for charges and made no complaint, but Massachusetts Attorneys did, stating that “stealing is stealing, whether you use a computer command or a crowbar, and whether you take documents, data or dollars”.

The charges carried a possible prison term of 35 years and a 1 million dollar fine.

After Aaron’s death his family criticized both MIT for not behaving responsibly when the activity was discovered and the US attorneys for disproportionately pursuing criminal charges. Some people argue that the problem lies in the law however, because it does not differentiate between taking things for profit and for other reasons. In effect stealing money from the bank is the same as stealing articles, even if the aim of stealing the articles is not to make money from the crime.

The BBC has a collection of messages from many of the best known architects of the cyber world and they really demonstrate the great esteem that the entire community held for Aaron. We do not know and will never know why he chose to take his own life, nor if the possible 35 years in prison played on his mind and pushed him into it, but as I stated at the beginning there is a lot of soul searching here about how the entire event was handled.

To Bradley Manning. Bradley is another young man who got on the wrong side of the authorities. He is a soldier who worked in intelligence, not high ranking but with access to a certain amount of low level classified data. He was arrested in Iraq in 2010 on suspicion of passing data to Wikileaks and is currently in a military prison awaiting trial.

Bradley Manning

Bradley Manning

Before his arrest Bradley was possibly not in the best frame of mind. Life in Iraq is not easy, he was taunted for his presumed homosexuality and self acknowledged gender difficulties and had outbursts of anger and self reclusion. He was not transferred though, nor his access to classified information revoked.

At some point Manning allegedly forwarded what were later to be known as the Iraq War Logs and Afghan War logs to Wikileaks, a crime that prosecutors say he admitted to in online chats.

He was charged with Aiding the enemy, a crime that carries the death penalty, although prosecutors have stated that they would only ask for life in prison without parole. An offer was made for a guilty plea in return for 16 years in prison but Manning maintained his not guilty stance.

Once again Manning’s presumed crime was not committed for profit but in order to give the public information that he believed they had a right to. The most known of all of the materials is the killing of the 2 Reuters journalists by a US helicopter crew, a sickening thing to watch.

Manning was very unhappy about the type of war he saw and felt that the general public needed to see what he had seen, and referring to the helicopter killing video said something in one of his chats that I believe expresses his motivation; “well what would you have done if you had seen it?”