<a href="http:&#x2F;&#x2F;www.astronomy.com&#x2F;news&#x2F;2015&#x2F;12&#x2F;a-new-planet-in-the-outer-solar-system-not-so-fast" rel="nofollow">http:&#x2F;&#x2F;www.astronomy.com&#x2F;news&#x2F;2015&#x2F;12&#x2F;a-new-planet-in-the-ou...</a><p>&gt; As Caltech astronomer Mike Brown pointed out via Twitter, &quot;Fun fact: if it is true that ALMA accidentally discovered a massive outer solar system object in its tiny tiny tiny field of view, ... that would suggest that there are something like 200,000 earth sized planets in the outer solar system. Which, um, no.&quot;<p>&gt; The far more likely possibility is that the astronomers captured one of the many icy objects floating beyond Pluto in the Kuiper Belt and the far-flung Oort Cloud. There are millions of such objects, ranging in size from less than a mile in diameter to almost 1,500 miles.