kuiper belt
New Horizons is Now 50 Astronomical Units Away From the Sun
As the New Horizons spacecraft hurtles out towards interstellar space, it has now reached an historical milestone. On April 17,…
Comets Already Grow a Coma out in the Kuiper Belt
Just when do comets get their signature coma? Conventional wisdom says it only happens when they get close enough to…
New Horizons Saw the Universe With Even Less Light Pollution than Hubble’s View
A new study based on New Horizons data has conducted the most accurate measurements of the Universe's background light to…
If Planet 9 is a Primordial Black Hole, We Might Be Able to See Flares When it Consumes Comets
A comet-eating black hole the size of a planet? It's possible. And if there's one out there in the distant…
Maybe the Elusive Planet 9 Doesn’t Exist After All
Oh Planet Nine, when will you stop toying with us? Whether you call it Planet Nine, Planet X, the Perturber,…
Over a Hundred New Large Objects Found in the Kuiper Belt
Hey Pluto, Sedna, Haumea, Makemake Et al.: You’ve got company! While searching for distant galaxies and supernovae, the Dark Energy…
New Horizon’s Flyby Target 2014 MU69 Gets its Official Name: Arrokoth
The KBO formerly known as Ultima Thule (2014 MU69) has officially been named "Arrokoth", the traditional Powhatan-Algonquin language.
More Evidence that Planet 9 is Really Out There
What's going on in the distant reaches of our Solar System? Is there a Planet 9 out there? Out in…
Here it is, the high resolution photo of MU69 we’ve all been waiting for.
A newly-processed image of Ultima Thule provides the highest-resolution picture of the object to date.
New Horizons Sees its Next Target for the First Time: Ultima Thule. Flyby Happens January 1, 2019
Earlier this month, the New Horizons team managed to capture the first images of Ultima Thule, the Kuiper Belt Object…