cepheid variables
Polaris is the Closest, Brightest Cepheid Variable. Very Recently, Something Changed.
A new study has revealed that Polaris' pulsating behavior may be caused by its binary companion, resolving a long-standing mystery…
JWST is the Perfect Machine to Resolve the Hubble Tension
Over the last decade, various measurements have disagreed over the rate that the Universe is expanding. Astronomers use Cepheid variables…
Supernovae Were Discovered in all These Galaxies
The Hubble space telescope has provided some of the most spectacular astronomical pictures ever taken. Some of them have even…
Black Hole-Neutron Star Collisions Could Finally Settle the Different Measurements Over the Expansion Rate of the Universe
If you've been following developments in astronomy over the last few years, you may have heard about the so-called "crisis…
How Fast is the Universe Expanding? Hubble and Gaia Team Up to Conduct the Most Accurate Measurements to Date
A new study used data from both Hubble and Gaia in order to obtain the most precise measurements of cosmic…
Precise New Measurements From Hubble Confirm the Accelerating Expansion of the Universe. Still no Idea Why it’s Happening
A new survey performed by the SHoES team using Hubble has confirmed that the Universe is in an accelerated rate…
The Cepheus Constellation
Located in the northern hemisphere is Cepheus, one of the 48 constellations included by Ptolemy in his classic work, The…
What are Cepheid Variables?
Discovered in the late 18th century, Cepheid Variable stars have become an important tool for measuring the size of the…
How Do We Measure Distance in the Universe?
This star is X light-years away, that galaxy is X million light-years away. That beginning the Universe is X billion…
What’s Going On Inside This New Kind of Variable Star?
A new kind of variable star -- 36 of that type, in fact -- has been found in a single…