Axios

SpaceX chief executive Elon Musk set some expectations for the first launch of the Falcon Heavy rocket, and talked about opportunities in space for business and research at the ISS R&D conference today in Washington.

Asked whether he planned to go to space himself, he said he probably would — eventually. "I would like to at some point. Assuming things work out, maybe in 3 or 4 years."

Astronomers are trying to explain highly unusual radio waves detected from a nearby red dwarf star.

What happened: This past spring, Astronomers at the Arecibo Observatory in Puerto Rico observed high-frequency radio wave pulses at a rate "unlike anything they had ever observed before" coming from star Ross 128, which is about 11 light years away.

These are a few of the possible explanations, per the Atlantic:

• Solar flares, but: red dwarf flares "occur at much lower frequencies and travel in different directions than what was seen around Ross 128."
• Crossing radio signals from another object in the "telescope's field of view," but: astronomers haven't seen anything to suggest that.
• Passing satellites, but: astronomers "have never seen satellites release signals of this nature."
• Interaction with an orbiting planet, but: "no planets have ben discovered around Ross 128."
• Radio frequency interference, but: astronomers don't think that's likely.
• Aliens, but: that's the least likely possibility.