We Still Can't Find the First Stars in the Universe | SciShow News

The video explores the search for Population III stars, which are believed to have existed shortly after the Big Bang. Despite extensive searches using telescopes like Hubble and Spitzer, these stars remain elusive, but their absence provides insights into the early universe. The video also discusses a mysterious X-ray source observed in the Magellanic clouds, identified as an ultra-luminous X-ray pulsar (ULXP). This discovery adds to the mystery of ULXPs, as astronomers seek to understand what makes them so bright and their role in the universe.

What are Population III stars primarily composed of?

• Carbon and Oxygen

• Hydrogen and Helium

• Iron and Nickel

• Silicon and Magnesium

What did the absence of Population III stars in the search suggest?

• They never existed

• They formed much later than expected

• They are composed of heavy metals

• They formed earlier than expected

What was the unusual source of X-rays observed between the Magellanic Clouds identified as?

• An ultra-luminous X-ray pulsar

• A supernova remnant

• A white dwarf

• A black hole

What instrument was used to study the X-ray source in 2019?

• Spitzer Space Telescope

• Indian Space Telescope ASTROSAT

• Very Large Telescope in Chile

• Hubble Space Telescope

What characteristic of ULXPs makes them stand out?

• Their rapid rotation

• Their super brightness

• Their large size

• Their long lifespan

How many ULXPs have been discovered so far?

• Twenty

• Twelve

• Eight

• Five

What is still unknown about ULXPs?

• Their exact location

• Their age

• What makes them so bright

• Their chemical composition