NASA | NPP Sees Aftermath of the Chelyabinsk Meteor

A meteor exploded over Chelyabinsk, releasing debris into the atmosphere. The OMPS satellite observed the plume, which was modeled by NASA to predict its trajectory. The plume circumnavigated the globe, forming a belt, and persisted for a long time. These observations help in understanding atmospheric impacts and are crucial for climate and ozone studies.

What was the surprising observation made by the OMPS instrument after the meteor explosion?

• The plume was observed at a lower altitude than expected.

• The plume was observed at a higher altitude than expected.

• The plume moved westward instead of eastward.

• The plume was not visible at all.

How did scientists project the trajectory of the meteor plume?

• By measuring the temperature changes in the atmosphere.

• By observing the plume with a telescope.

• By inserting data into NASA models.

• By using weather forecasts.

What was the surprising result of the meteor debris' global journey?

• The debris only traveled a short distance.

• The debris disappeared after a few days.

• The debris formed a complete global belt.

• The debris formed a scattered pattern around the globe.

Why was the clean shape of the global belt surprising?

• Because the northern hemisphere winds are usually inconsistent.

• Because the southern hemisphere winds are usually consistent.

• Because the northern hemisphere winds are usually consistent.

• Because the southern hemisphere winds are usually inconsistent.

What is the significance of the models used to study the meteor plume?

• They are used to track ocean currents.

• They are used to study climate and ozone depletion.

• They are used to monitor volcanic eruptions.

• They are used to predict future meteor impacts.