Astronomers Vicent Martínez and Bernard Jones explain the mystery of the Hubble tension, and why it matters so much for our understanding of the universe, on The Conversation Weekly podcast.
Galaxy NGC 6822, neighbouring the Milky Way galaxy, being studied to learn more about stars and dust in the early universe.
(NASA/James Webb Space Telescope)
Rajendra Gupta, L’Université d’Ottawa/University of Ottawa
A new hypothesis suggests that the universe may be twice as old as we had believed. Observations from the James Webb Space Telescope provide new information on the rate of the universe’s expansion.
A phenomenon called gravitational lensing can help astronomers observe faint, hard-to-see galaxies.
NASA/STScI
The universe used to be filled with a hydrogen fog, before early stars and galaxies burned through the haze. Astronomers are studying galaxies that tell them about this period in the early universe.
NASA’s missions have inspired generations of young people to pursue the sciences.
Patrick Semansky/AP
Both Stephen Alexander’s elementary teachers and televised NASA missions throughout the ‘60s influenced his journey into science. He recounts NASA’s legacy, 65 years after the agency’s inception.
The far side of the Moon is an attractive place to carry out astronomy.
NASA / Ernie Wright
Clouds, hellish temperatures, endless nights? Characterizing the atmosphere of exoplanets, planets that orbit stars other than the sun, is a formidable task.
Thirty years ago the Hubble Space Telescope began snapping photos of distant stars, providing a time machine that has taken astronomers back to when the universe was less than a billion years old.
An enhanced image of galaxy clusters.
(NASA/Shutterstock)
35 years ago Sally Ride became the first American woman in space. But rather than focus on her own extraordinary achievements, her passion became boosting the number of girls pursuing STEM. Another pioneering astronaut remembers her friend and colleague.
Gravity of a white dwarf star warps space and bends the light of a distant star behind it.
NASA, ESA, and A. Feild (STScI
People used to think that when they looked up at the night sky, they were seeing all of space. Then American astronomer Edwin Hubble found out something so amazing, NASA named a telescope after him.