A New Explanation For Why We'll Never Visit Other Suns
Jan 19, 2009 14:19
Pessimism about our spacefaring future has become fashionable these days — people point to our limited lifespans and energy resources. But the World Of Technology blog just posted an argument I haven't seen before.
Blogger mayank points to all the usual reasons why it'll be hard for our descendents to reach the nearest star system, Alpha Centauri: it would take 75,000 years withour current rockets, going faster requires more and more energy, etc. "Sending a 100-ton habitat, stuffed with a small crew, to Alpha Centauri at a speed that will deliver them before they turn up their toes requires as much energy as the United States consumes in a year."
But then there's also another point to consider: Mayank points out that in the past 70 years, our rocket technology has only gotten about 10 times faster. In about half that time, our imaging capabilities have gotten 5,000 times better and clearer. The Mariner 4 space probe in 1965 had a monochrome camera capable of capturing about 40,000 pixels. By contrast, the HiRise camera on today's Mars Reconnaisance Orbiter has a resolution of 200 million pixels, in color.
It'll be way ceheaper and easier to send probes to other star systems than it will to send humans — and soon our imaging capacity will be better than our limited human senses. It may just never make sense, from a logistical standpoint, to send a human instead of an automated probe. Food for thought, anyway. [World Of Technology]
As companies in the technology sector know how important security is for their users. That's why they update their systems with better functions so that nobody can easily access their data. In sight are the fingerprint sensors or the face recognition cameras. But there is nothing wrong with using traditional user and password methods. Read more
Whether you’re just getting started with digital marketing or you’ve been at it for a while, it’s easy to become engrossed in the day-to-day tasks without taking the time to look at the overall picture. The best analogy here is…swimming! If you swim with your head in the water and don’t look up every once in a while, it’s not difficult to end up away off in the wrong direction. It’s the same with your digital marketing strategy, and there are plenty of other reasons why you’ll want to make sure you have one in place. Read more
You have probably heard or know Microsoft Excel, but ... had you thought that there are powerful reasons to learn to use it with a certain level of depth? Do you know how to use it? What is your level? Read more