The planet-hunting career of NASA's Kepler spacecraft might be near its end.

Astronomers said Wednesday that a reaction wheel that keeps the orbiting telescope pointed at tiny, distant patches of sky to look for Earth-like planets has failed. If they can't fix it, Kepler will be relegated to a less prestigious mission, directing its gaze much closer to home in a search for so-called "near-Earth objects," i.e., meteors and asteroids.

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MELISSA BLOCK, BYLINE: This is ALL THINGS CONSIDERED from NPR News. I'm Melissa Block.

AUDIE CORNISH, BYLINE: And I'm Audie Cornish.

The Obama administration is doing some intensive damage control this evening. Tonight, the president announced that the acting commissioner of the IRS, Steven Miller, is being pushed out over heightened scrutiny given to Tea Party groups and other conservative organizations.

A recent incident on a commercial airliner raises an interesting question: can an airline bar you from taking pictures on their plane?

Revelations that the Internal Revenue Service targeted some conservative groups seeking tax-exempt status for extra scrutiny have put a spotlight on a part of the tax code increasingly popular with political groups: section 501(c)(4).

But what's the benefit for organizations to get approved for 501(c)(4) status?

School suspensions are a big issue in California. Last year, schools handed out 700,000 of them. But the Los Angeles Unified School District took a step to change that this week when it voted to ban suspension of students deemed "willfully defiant."

The competition for your ears — and dollars — just got a little tougher. On Wednesday, Google launched a paid music subscription service that will put it in direct competition with other streaming services like Spotify and Pandora. The announcement may just be the beginning for Google.

The Justice Department's subpoena of Associated Press phone records as part of an investigation into what Attorney General Eric Holder has called "a very grave leak" to the news agency has set off a political firestorm on Capitol Hill, but there's a lot to the AP story published a year ago that started it all.

Scintillating isn't how you'd describe the report issued by the Treasury inspector general's report on the Internal Revenue Service's targeting of conservative groups.

It was written, after all, by government bureaucrats for government bureaucrats. Enough said.

If you're old enough to drive, are you old enough to vote?

You soon will be if you live in Takoma Park, Md. The famously progressive suburb of Washington, D.C., has just extended voting rights in municipal elections to 16- and 17-year-olds.

Takoma Park was the first city in the country to take such a step, but its action is part of a larger trend toward letting people vote earlier.