Short-period comets need roughly 200 years or less to complete one orbit, long-period comets take more than 200 years, and single-apparition comets are not bound to the sun, on orbits that take them out of the solar system, according to NASA.
Yes, you can invest in both an IRA and a 401k (or a Roth 401k and a Roth IRA) at the same time, or any combination of those accounts. And in some cases, based on the fees in your 401k, an IRA might actually be a better place to invest your money.
Remember that contribution limits apply to the total of your contributions to all of your retirement accounts, either IRA or 401k. Note that the chart below includes the Roth option â which as of 2006 has been available for 401ks as well as IRAs.xamples Of How You Can Contribute To Both A 401k And An IRA. Letâs look at an example of how you can combine the power of the 401ks and IRAs to speed up your retirement savings: Example #1: Consider a 30-year-old earning $55,000 per year (25% tax bracket).