national astronomical observatory of japan

Decoding Signals From Space

Faced with datasets of galactic proportions, astronomers are turning to supercomputers to reconstruct the universe’s dynamic past and better understand its expansive present and future.

Star With Unusual Chemistry Came From Out Of Town

Using the Subaru Telescope, astronomers have confirmed the existence of a star that may have originated in a dwarf galaxy that has since merged with the Milky Way.

Subaru Telescope Reveals 83 Supermassive Black Holes

The most distant of the 83 supermassive black holes is 13.05 billion light years away, and the average spacing between black holes is one billion light years, say researchers in Japan.

Why The Phaethon Asteroid Is Peculiarly Polarized

The Phaethon asteroid reflects less light than previously thought, suggesting that its surface may be made of coarse rubble.

NAOJ Founding Director General Yoshihide Kozai Passes Away At Age 89

Dr. Yoshihide Kozai was well known for his work on the precise forecasting of orbital motions of natural or artificial satellites around the Earth.

Staring At The Aftermath Of A Neutron Star Merger

Observations from Japan-operated space observatories located around the world confirmed that the August 2017 gravitational wave signal arose from a kilonova, which happens when neutron stars merge.

Hearing The Cries Of A Newborn Star

The interplay of centrifugal and magnetic forces plays an important role in determining the flow of gas around a newly formed star, researchers say.

Catching A Black Hole By Its Tail

A tell-tale tail has given away the location of a previously hidden black hole near the supernova remnant W44.

Could Humans Live There? Check The Planet’s Shadow

By timing the shadow of a nearby, potentially habitable planet, researchers could determine if its atmosphere contains molecules related to life, such as oxygen.

The Chemistry Of Stellar Cocoons

Astronomers have discovered the first ‘hot molecular core,’ a cocoon of molecules that surrounds newborn stars, in a galaxy other than our own.