Education and reference

This week, astronomers will be up in the early morning hours to see Perseids, a meteor shower that has historically proven to put on quite a show. This happens every August when Earth passes through debris from the Swift-Tuttle comet.

If you're an amateur astronomer or someone looking to get started with the hobby, you might be surprised to know that there are online tools to help you tonight, when you want to see Perseids, and every other night you go in the back yard and set up your telescope.

Astronomy Network Astronomy Network is a social network for astronomers. It sounds like a neat idea, but after you sign up, you quickly realize that the site has such a small community, it's tough to find value in it.

That said, Astronomy Network's forums are a great place to hang out and communicate with some of the members. If you end up making friends with some users, you can instant message each other, send direct messages, upload videos, and add images to the site. It's a full-featured social network designed specifically for amateur astronomers, but until more people join, it won't live up to its potential.

CalSky CalSky is an invaluable astronomy tool. The site provides you with a search that you can modify to find exactly what you're looking for tonight. Do you want to see the International Space Station? Are you looking for meteor streams? The site will help you find it all.

When you get to the site, it determines your location. From there, it will find all the objects you search for in the night sky on a specific day (you can search for any day of the year). The site explains each cosmic event and where to find it in the sky. When you click on one of those events, it delivers a page that provides even more information. If you're serious about astronomy, this is the site for you.… Read more

The housing market is showing signs of returning. According to a recent report, home prices have posted a small gain and economists are suggesting that the housing market might be stabilizing.

Realizing that, and especially considering that first-time homebuyers are trying to capitalize on the government's $8,000 credit, sellers might be more willing to sell their homes than they were last year. If you're one of those folks, you'll want to consult some services on the Web that will help you get the job done. From valuation tools to agent search services, you'll have everything you need to make a deal on your house.

But if your house isn't quite ready yet and you're looking for some design tips to make it more appealing to would-be buyers, check out this roundup I wrote recently helping you do just that.

Cyberhomes: Cyberhomes' main focus is home valuations. Simply input the address of your property and the site will tell you how much it believes it's worth.

But Cyberhomes does more than appraisals. The site also provides a listing of homes for sale in your area, where you can find "distressed" homes you might be able to buy on the cheap, and neighborhood information down to income and demographic data. It's a full-featured site.

Domania: Domania can help you see how your home compares with others that have already sold, which is helpful since most homes are valued based on a number of factors, including recent sales in your neighborhood. It won't tell you the value of your home, but since real appraisals are completed by comparing nearby homes that are similar to yours, Domania should help you find the sweet spot for pricing your home. I was impressed by the sheer number of houses it listed on the site. You should find just about any home sold in your area.… Read more

Streaking through space at 5 miles per second, the International Space Station is the largest satellite ever built, massing 670,000 pounds and stretching 357 feet--longer than a football field--from one end of its main solar power truss to the other.

An hour or two before sunrise and after sunset, when you are in Earth's shadow and the space station--orbiting 220 miles up--is still illuminated by the sun, the ISS outshines Jupiter and rivals Venus as it sails across the sky.

The space station is by far the easiest satellite to see--it's impossible to miss if you're … Read more

Google Calendar has quickly become one of my favorite online tools. I can schedule meetings quickly and it integrates seamlessly into my workflow. It's a great service.

But I want more from it.

That's why I've been sifting through Mozilla's Firefox extension database trying to find some add-ons that take Google Calendar to the next level. Whether they enhance its usability or just improve its effectiveness, there are a handful of extensions that work quite well.

Better GCal After I installed Better GCal, I was extremely impressed by what it offered. From a new skin to little extras like week numbers and collapsible headers, it makes Google Calendar just a little better. The extension not only made me more organized, but the calendar became far more readable.

GCal Popup GCal Popup is a really neat idea. Instead of forcing you to open a new tab to add an event to your Google Calendar, you'll only need to open the extension and it will display your Google Calendar over your current Web page. Input the event you want to add to your calendar and once you're done, you can close the extension and go back to work.

GCal Popup is designed to make it convenient to add events to your Calendar and it succeeds. But beware that it's an "experimental" extension, so it might cause some instability issues. That said, I haven't experienced any such problems.… Read more

Forty years ago this Thursday, Apollo 11 astronauts Neil Armstrong, Buzz Aldrin, and Michael Collins lifted off on their historic mission to the moon. It was the first manned spaceflight to reach the lunar surface, and on July 20, 1969, first Armstrong then Aldrin became the first people to step onto the moon. (Collins stayed in orbit around the moon for the 21 or so hours that the other two were on the surface.)

Today, the Web is home to a variety of sites that remember the historic mission to the moon. If you're looking to remember Apollo 11, take a look at these resources.

Apollo 11: The Game Apollo 11: The Game puts you in the cockpit of the Lunar Lander. The iPhone app lets you start out blasting off into space. From there, you'll need to make your way to the moon, land on the lunar surface, and get back to Earth safely.

In order to complete your mission, you'll need to beat all seven levels. I haven't played the game, so I don't know how good it is. But if you want to feel like you're part of the crew, it might be worth paying $3.99 to have it.

Apollo 11 The Apollo 11 group on Facebook is ideal for those looking to discuss Apollo 11 on the popular social network. The group doesn't have many members--as of this writing, there are just 432 users--but it makes up for that with a handful of links that provide even more information on the Apollo 11 mission. The group would be better with more members, but it's the biggest Facebook group dedicated to the mission, so if you want to connect with like-minded people, it's a group to join.… Read more

You're obviously incredibly fortunate if you are helped in a life-or-death situation, but being on the giving end of such emergencies is very satisfying, too. Now, with Pocket First Aid & CPR, you can make sure to be ready the next time you are called upon to save someone.

Pocket First Aid & CPR was created by the American Heart Association in collaboration with Jive Media.

It's is a 65MB application (so make sure you install it via iTunes or a Wi-Fi connection) that features hundreds of pages of text and illustrations, with topics ranging from CPR and … Read more

Guitarists are typically a pretty hesitant bunch when it comes to adopting new tech. In fact, most guitarists I know spend their time lusting after vintage guitars and vacuum tube amps--casting disdainful sneers at anything that looks as though it were invented after 1980.

That said, the majority of my musician friends are also iPhone owners. Their excuse for allowing a smartphone into their otherwise low-tech lifestyle is that they want to stay connected with their fans via e-mail, SMS, Twitter, or whatever app of the month might help them promote their music and their shows.

If you're a … Read more

I spent part of last week in Washington, D.C., at the annual National Educational Computing Conference. The event, which celebrated its 30th anniversary this year, is sponsored by the International Society for Technology in Education (ISTE).

As you'd expect, there were plenty of workshops on the nuts and bolts of using technology in the classroom. But as technology evolves, so does the way it's used by some creative educators.

There were several sessions, for example, on how to use cell phones within the classroom. Considering that some school districts still ban students from bringing cell phones to … Read more

With the economy still in shambles, landing an internship might be the best way to get a foot in the door of a company that might hire you someday. But finding even an unpaid internship can be difficult. So here's a list of resources that are designed to help prospective interns achieve their professional goals.

If you're just looking for job search engines, check out our roundup from earlier this year.

BuddingUp: BuddingUp is a site that helps interns and recent graduates find the jobs they want. The site is broken into two sections: a job board and a career page listing. The former lists all the jobs the site has found across the Web that might be of interest to prospective interns. Unfortunately, you can't search it easily, so you'll be forced to scroll through the pages to get what you're looking for, which is not very convenient.

But the career pages listing is a fantastic resource. Instead of wasting your time going to individual company sites trying to apply for an internship, BuddingUp provides it all for you. So if you want to check for all the openings at Wal-Mart, Sony, or General Electric, the site will provide you with direct links to those individual career listings pages.

Enternships: Enternships is a unique site that helps you find internships at Web start-ups. It requires start-ups to list their gigs, which can then be searched for by interns who can apply directly on the site.

Since Enternships was started in association with Oxford University's Oxford Entrepreneurs program, many of the jobs listed on the site are located in the U.K. There are some listings for the U.S., but if you're in the States, Enternships shouldn't top your list until more listings are added to the site.

Intern Abroad: Intern Abroad is a really neat site. Instead of helping you find an internship in North America, the site lists all the open internships listed all over the world. So if you want to work as an economics intern over the summer in China, you'll find all the open listings (13 as of this writing) for those jobs.Intern Abroad doesn't list individual jobs on its site, though. Instead, it provides search results of companies and organizations offering internships in the country you designate. That can get annoying, since you'll be forced to jump from site to site to get what you want, but considering it's a unique service, that downside can be overlooked.

… Read more