Gaia turns its eyes to asteroid hunting

While best known for its surveys of the stars and mapping the Milky Way in three dimensions, ESA's Gaia has many more strings to its bow. Among them, its contribution to our understanding of the asteroids that litter the ...

NEOWISE mission spies one comet, maybe two

NASA's NEOWISE mission has recently discovered some celestial objects traveling through our neighborhood, including one on the blurry line between asteroid and comet. Another—definitely a comet—might be seen with binoculars ...

Newly discovered solar system objects resonate with Neptune

The search for distant solar system objects has found two more small worlds far outside the orbit of Neptune. The new objects are located beyond the Kuiper Belt, which is a belt of small icy objects just beyond Neptune, of ...

Astronomer helping NASA spacecraft explore beyond Pluto

The computer found it first – Kuiper Belt Object 2014 MU69  – but University of Virginia astronomer Anne Verbiscer was the "human backup" who found it next. She confirmed the finding for NASA by using the same technique ...

Hubble discovers moon orbiting the dwarf planet Makemake

Peering to the outskirts of our solar system, NASA's Hubble Space Telescope has spotted a small, dark moon orbiting Makemake, the second brightest icy dwarf planet—after Pluto—in the Kuiper Belt.

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, ...

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