Could Life Have Survived in Mars's Ancient Lake?

The video explores the history of Gale Crater on Mars, which was once an ancient lake that may have supported life due to its stratified layers and varying oxygen levels. Researchers used data from the Curiosity Rover to study the sedimentary rocks, revealing insights into the Martian climate and potential habitability. The video also discusses a breakthrough in observing gravitational microlensing, proving part of Einstein's theory of general relativity. Using the Hubble Space Telescope, scientists observed a star's gravitational effect on another star's light, providing new insights into the mass of the white dwarf Stein 2051 B.

What was Gale Crater on Mars believed to be billions of years ago?

• A lake

• A desert

• A mountain

• A forest

What geological feature in Gale Crater allows scientists to study its history?

• A river

• A volcano

• Mount Sharp

• A canyon

What phenomenon did Einstein predict that involves the bending of light from distant stars?

• Solar flares

• Gravitational microlensing

• Black hole formation

• Cosmic inflation

What tool was used to observe the shift in a star's position, confirming Einstein's prediction?

• Kepler Space Telescope

• James Webb Space Telescope

• Hubble Space Telescope

• Chandra X-ray Observatory

What type of star is Stein 2051 B?

• White dwarf

• Main sequence star

• Neutron star

• Red giant

What was the confusion about Stein 2051 B that recent observations helped resolve?

• Its temperature

• Its distance from Earth

• Its color

• Its mass

What did the recent study of Stein 2051 B confirm about its mass?

• It is lighter than previously thought

• It is about 2/3 the mass of the Sun

• It is heavier than the Sun

• It is the same mass as the Sun