Who gave the expanding universe hypothesis?
Edwin Hubble
The correct answer is Edwin Hubble.
Edwin Hubble's observations of distant galaxies in the 1920s provided strong evidence for an expanding universe. He noted a relationship between the distance of a galaxy and its redshift (the stretching of light waves due to the Doppler effect). This relationship, known as Hubble's Law, indicates that galaxies are moving away from us, and the farther away they are, the faster they are receding. This observation strongly supported the expanding universe hypothesis, a cornerstone of modern cosmology.
While other scientists contributed to our understanding of the universe, Hubble's direct observation and quantification of galactic recession velocities were pivotal in establishing the expanding universe theory.
Similar Questions
Which of the following ISRO initiatives, launched with the vision of "Catch them young", aims to introduce school students to space science and technology?
- What is the main objective of ISRO'S SCATSAT-1 satellite?
- Who was announced on 26 June 2025 as first Indian astronaut for Titans Space mission?
- India's support for which of the following missions aligns most closely with IMEC's purpose?
- What advanced technology is being tested in ISRO's new "Next Generation Launch Vehicle" (NGLV) project to replace PSLV and GSLV?
- Which solar phenomenon is responsible for disturbances in Earth's magnetic field?
Consider the following statements:
1. The Aditya-L1 mission was launched to replace the INSAT series of weather satellites.
2. Aditya-L1 successfully entered a Halo Orbit around the Lagrange Point 1 (L1) to observe solar activity.
Which of the statements given above is/are correct?- Earth remote sensing satellites (EOS) are primarily designed to:
- What is the name of the satellite launched by ISRO's GSLV-F09 that was a gift to SAARC nations?
Important Questions from Space and Nuclear Program
With reference to `Astrosat', the astronomical observatory launched by India, which of the following statements is/are correct?
1. Other than USA and Russia, India is the only country to have launched a similar observatory into space.
2. Astrosat is a 2000 kg satellite placed in an orbit at 1650 km above the surface of the Earth.
Select the correct answer using the code given below.
Consider the following statements: The Mangalyaan launched by ISRO
1. is also called the Mars Orbiter Mission
2. made India the second country to have a spacecraft orbit the Mars after USA
3. made India the only country to be successful in making its spacecraft orbit the Mars in its very first attempt
Which of the statements given above is/are correct?
Which of the following pair is/are correctly matched?
Select the correct answer using the code given below.
Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when:
1) The orbit is geosynchronous.
2) The orbit is circular.
3) The orbit lies in the plane of the Earth's equator.
4) The orbit is at an altitude of 22,236 km
Select the correct answer using the codes given below:
An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth
