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Specks returned from space may be alien visitors

By WTOP Staff

MARCIA DUNN
AP Aerospace Writer

CAPE CANAVERAL, Fla. (AP) — There may be itsy-bitsy aliens among us.

Scientists say seven microscopic particles collected by NASA’s comet-chasing spacecraft, Stardust, appear to have originated outside our solar system. If confirmed, this would be the world’s first sampling of contemporary interstellar dust.

“They are very precious particles,” the team leader, physicist Andrew Westphal of the University of California, Berkeley, said in a statement Thursday.

The dust collectors were exposed to what is believed to be the interstellar dust stream in the early 2000s and returned to Earth in 2006. Since then, dozens of scientists worldwide led by Westphal have examined scans of the collection panels to zero in on the particles. The team was assisted by 30,000 citizen-scientists, dubbed Dusters, who reviewed more than 1 million images in search of elusive tracks made by incoming particles.

The findings were published Thursday in the journal Science.

Westphal said the suspected interstellar particles are surprisingly diverse. Some are fluffy like snowflakes.

A few particles splatted a little when they hit the collection panels because of their speed and the fact that some ended up hitting the aluminum foils between the softer aerogel tiles meant to capture the grains. In fact, one particle believed to be following the flow of interstellar wind was vaporized because it was going so fast — an estimated 10 miles per second.

The dust is considered young by cosmic standards: less than 50 million to 100 million years old, the life expectancy of interstellar dust.

Westphal said additional testing is needed before concluding these seven specks are truly from outside our solar system. And there may be more: Roughly half the dust-collection panels have yet to be scanned. The physicist expects to find no more than a dozen interstellar dust specks in all, however, a tiny fraction of the amount of comet matter gathered by Stardust.

More than 50 grains embedded in the Stardust collectors were deemed to be debris from the spacecraft itself.

NASA launched Stardust in 1999 to collect debris from Comet Wild-2. The Stardust capsule parachuted back to Earth, landing in the Utah desert seven years later.

___

Online:

Science: http://www.sciencemag.org/

NASA: http://stardust.jpl.nasa.gov/news/news116.html

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Don’t Settle for Student Loans to Pay for Online Education

By WTOP Staff
Online college programs are becoming a more popular choice for prospective students, with one study finding that more than 6 million students enrolled in at least one online course in fall 2015. The popularity of these courses can be attributed in part to their flexibility with working adults' schedules, students' ability to progress more quickly through online programs and, oftentimes, cheaper tuition. [See 10 low-cost online bachelor's programs for out-of-state students.]Online degrees can be beneficial to many college students, but some studies have shown online learners complete their programs at lower rates than students at traditional brick-and-mortar campuses. Individuals with student loans but no degree comprise two-thirds of defaulted borrowers. Though these numbers are not encouraging, just like for traditional programs, there are ways to reduce how much you'll need to borrow for an online program to ensure you won't become one of these statistics. Don't just settle on borrowing student loans to cover the whole cost of your program and living expenses. Instead, start thinking about how to cut costs and cover your balance in different ways, such as the following. -- Grants and scholarships: Even though you are taking an online course, you can still apply and receive grants and scholarships. But your first step should be to complete the Free Application for Federal Student Aid, commonly referred to as the FAFSA, which will allow you to receive a Pell Grant if your expected family contribution is low enough. The EFC criteria and award amounts are adjusted annually, but the 2017-2018 academic year awards range from $606 to $5,920, which could significantly lower the amount you borrow annually. Your next step is to apply for scholarships. You can start by checking online scholarship search engines, such as the Salt Scholarship Search, College Board's BigFuture and Peterson's. But don't forget to take advantage of local organizations and your school's financial aid office. Both may offer scholarships that you can't find with a national scholarship search. [Review these 10 sites to kick off your scholarship search.]For instance, organizations like the Elks Club, Knights of Columbus or the Rotary Club typically offer scholarships annually to local students. Just because you're going to school online doesn't mean you're ineligible. Visit your local library for scholarship listings, and ask around town. You might be surprised how many local organizations offer scholarships. While these scholarships typically aren't large, every little bit counts. Each dollar you receive in a scholarship is a dollar you don't have to borrow and pay interest on. -- Work-study: Another option for online students may be work-study awards. Not all students enrolled in online programs are eligible, but students at some schools -- including, for example, SUNY Empire State College and Liberty University -- are. Work-study awards are not given upfront like scholarships and grants. In most cases, they are an offer to earn up to the awarded amount if you secure an eligible work-study job. While there is a misconception that all work-study jobs must be on campus, students can work for off-campus, nonprofit or public employers as long as the work is in the public's interest. You may be able to work for a for-profit employer if the job is relevant to your course of study. No matter who the outside employer is, it will need to have an established agreement with your college for you to receive work-study funds. Remember, to be eligible for federal financial aid, you must be enrolled and pursuing a degree or certificate. If you're not working toward a credential, Pell Grants and work-study won't be option, but you may still be able to take advantage of private scholarships -- just be sure to read the eligibility criteria carefully. [Explore what to know about financial aid in online programs.]-- Pay as you go: One of the great benefits to enrolling online is the flexible schedule, which can allow you to complete your college coursework around your responsibilities. But prospective students often overlook using their part- or full-time job earnings as an option for paying for college. Almost 80 percent of college students in 2015 worked at least part time while attending classes, according to the National Center for Education Statistics. By budgeting and thinking strategically about your college costs, you can likely reduce your dependence on student loans by paying a portion out of pocket. Many -- but not all -- online programs are less expensive than traditional programs and often have shorter payment periods. Six, eight or 10 weeks are common course durations. Because of the frequency of payments in an online setting, you may be well-placed to pay as you go and possibly avoid borrowing altogether. Attending college online and avoiding student loans may be challenging, but if you are willing to put in the effort, you can limit the amount you need to borrow. More from U.S. News Q&A: Understanding Student Loan Discharge Eligibility Student Loan Refinancing Isn't Right for All Borrowers
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