News tagged with solar system

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Planet Nine: A world that shouldn't exist

Earlier this year scientists presented evidence for Planet Nine, a Neptune-mass planet in an elliptical orbit 10 times farther from our Sun than Pluto. Since then theorists have puzzled over how this planet could end up in ...

dateMay 03, 2016 in Astronomy
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How do we know there's a Planet 9?

At this point, I think the astronomy textbook publishers should just give up. They'd like to tell you how many planets there are in the solar system, they really would. But astronomers just can't stop discovering new worlds, ...

dateApr 25, 2016 in Space Exploration
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Our sun may have eaten a super-Earth for breakfast

Our solar system sure seems like an orderly place. The orbits of the planets are predictable enough that we can send spacecraft on multi-year journeys to them and they will reliably reach their destinations. But we've only ...

dateApr 22, 2016 in Astronomy
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Lone planetary-mass object found in family of stars

In 2011, astronomers announced that our galaxy is likely teeming with free-floating planets. In fact, these lonely worlds, which sit quietly in the darkness of space without any companion planets or even a host sun, might ...

dateApr 20, 2016 in Astronomy
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Saturn spacecraft samples interstellar dust

NASA's Cassini spacecraft has detected the faint but distinct signature of dust coming from beyond our solar system. The research, led by a team of Cassini scientists primarily from Europe, is published this week in the journal ...

dateApr 14, 2016 in Space Exploration
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