Space telescope hubble photograph

The Hubble Space Telescope revolutionized astronomy with detailed images of the cosmos, revealing distant galaxies, nebulae, and planets.

About this subject

The Hubble Space Telescope, launched in 1990 by NASA in partnership with ESA, orbits Earth at about 540 km altitude. With a 2.4-meter primary mirror, it captures visible, ultraviolet, and near-infrared light, allowing observations free from atmospheric distortion. Its iconic images, such as the Pillars of Creation in the Eagle Nebula and the Hubble Deep Field, have transformed our understanding of the universe.

Among its greatest contributions is the determination of the universe's expansion rate, leading to the discovery of dark energy. Hubble also confirmed the existence of supermassive black holes at galaxy centers and provided the first direct evidence of exoplanet atmospheres. Over more than three decades, it has conducted over 1.5 million observations, generating data that resulted in thousands of scientific papers.

Culturally, Hubble's photographs have become symbols of space exploration, featured in magazines like National Geographic. They combine aesthetic and scientific value, inspiring generations of astronomers and the general public. The telescope was serviced and upgraded in five space shuttle missions, extending its lifespan far beyond the original plan.

Frequently Asked Questions

What is the importance of the Hubble Space Telescope?

Hubble revolutionized astronomy by providing sharp images of the universe, enabling discoveries such as the age of the universe (13.8 billion years), the existence of dark energy, and the characterization of exoplanet atmospheres.

Where is the Hubble located?

It orbits Earth at an altitude of about 540 km in a low-Earth orbit, allowing servicing by space missions, but it is not in geostationary orbit.

How many images has Hubble captured?

As of 2024, Hubble has conducted over 1.5 million observations, generating more than 190 terabytes of data, including thousands of iconic images.