Exoplanet K218b and the Search for Extraterrestrial Life

What is the primary significance of dimethyl sulfide (DMS) in the search for extraterrestrial life?

• It is a type of star.

• It is a rare mineral found on Earth.

• It is a robust biomarker produced mainly by life.

• It is a common atmospheric gas.

Which telescope discovered the exoplanet K218b?

• Kepler Space Telescope

• Spitzer Space Telescope

• James Webb Space Telescope

• Hubble Space Telescope

What are the key elements found in the atmosphere of K218b that suggest the possibility of life?

• Hydrogen and helium

• Oxygen and nitrogen

• Methane and carbon dioxide

• Helium and argon

On Earth, which organisms are primarily responsible for the production of dimethyl sulfide (DMS)?

• Birds

• Insects

• Marine organisms, particularly phytoplankton

• Trees

What challenge is associated with detecting DMS on distant exoplanets?

• It is too small to detect.

• It is only found in solid form.

• Its spectral signature is easily masked by other gases.

• It is too bright to observe.

What does the detection of DMS on K218b suggest about the planet?

• It is covered in ice.

• It may have marine life similar to Earth's phytoplankton.

• It has a volcanic surface.

• It has a large desert.

What is a potential reason for skepticism about the DMS detection on K218b?

• The telescope used was outdated.

• The DMS signal was not very strong.

• DMS is not a reliable biomarker.

• DMS is commonly found in space.

What is one reason why detecting DMS in another hydrogen-rich exoplanet's atmosphere might be impossible?

• DMS is a solid at low temperatures.

• DMS is only produced in laboratories.

• DMS disappears quickly in Earth's atmosphere.

• DMS is too heavy to remain in the atmosphere.

What is the role of the mid-infrared instrument MIRI on the James Webb Space Telescope?

• To detect gravitational waves

• To observe black holes

• To detect a broader range of wavelengths

• To measure cosmic microwave background

What is the significance of the potential discovery of life on K218b?

• It would confirm the existence of intelligent life.

• It would suggest that life can exist in diverse environments.

• It would prove that Earth is unique.

• It would indicate that all exoplanets have life.