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Spiral arms around a star, made by a giant planet
Spiral arms are common in galaxies, but they can also form in disks of dust and gas around young stars. A new discovery shows how giant planets create them.
July 20, 2023
The moon visits 3 rocky planets on July 18, 19 and 20
On July 18, 19 and 20, 2023, the moon visits 3 rocky planets in the west. Mercury, Venus and Mars will all pair up with the moon on back-to-back nights.
July 20, 2023
Ocean worlds around red dwarfs … common?
A new study says that the chances of ocean worlds - rocky planets with liquid water - orbiting red dwarf stars is much greater than previously thought.
July 19, 2023
Algae bloom covers half of Florida’s largest lake
An algae bloom in Lake Okeechobee - Florida's largest freshwater lake - covered more than half the lake in June and July. Learn more about the algae here.
July 19, 2023
Ancient moon volcano revealed in far side hot spot
Scientists discovered an ancient moon volcano after detecting a hot spot - an underground mass of radioactive granite - on the far side.
July 18, 2023
Airplane-sized asteroid found 2 days after brush by Earth
An airplane-sized asteroid came within 1/4 the moon's distance to Earth on July 13, 2023. However, scientists didn't detect the asteroid until two days later.
July 16, 2023
1st dark stars?! Maybe, say astrophysicists
Scientists say they've found the 1st dark stars - brighter than our sun - powered by dark matter particles that collide and annihilate themselves.
July 16, 2023
Oceans turning greener due to global warming
Are oceans turning greener amid climate change? Scientists studying satellite images of the ocean for more than 20 years said yes.
July 16, 2023
How nuclear fusion works to let stars shine
Nuclear fusion powers our sun and is the energy source of the stars in our night sky. Here's how nuclear fusion works to make stars shine.
July 16, 2023
Ara and Triangulum Australe in southern skies
Ara and Triangulum Australe are two constellations in southern skies representing an Altar and the Southern Triangle. See them on July evenings.
July 16, 2023
