Astronomers have observed a collision between a black hole and a neutron star using gravitational waves, detected by LIGO and Virgo observatories. This marks the first time such an event has been recorded, offering insights into the structure of neutron stars. Meanwhile, NASA's Europa Clipper mission progresses, aiming to explore Jupiter's moon Europa for signs of life. Despite challenges like budget overruns and instrument changes, the mission is moving forward, with potential launch options being considered.

What makes the collision between a black hole and a neutron star particularly exciting for astronomers?

• It was observed using visible light.

• It was detected on Mars.

• It was the first time such a collision was detected.

• It involved two black holes.

How do gravitational waves affect the space around them?

• They make space shorter in one direction and longer in another.

• They make space darker.

• They make space hotter.

• They make space brighter.

What is the primary goal of NASA's Europa Clipper mission?

• To explore the rings of Saturn.

• To land on the surface of the Sun.

• To study Jupiter's moon Europa for signs of life.

• To study the atmosphere of Mars.

Why was the original magnetometer for the Europa Clipper mission replaced?

• It was too slow.

• It was too heavy.

• It was too expensive and couldn't handle Jupiter's radiation.

• It was too small.

What challenge does the Europa Clipper mission face regarding its launch?

• The spacecraft is not built yet.

• The spacecraft is too large to launch.

• The launch vehicle is not yet available.

• The mission has no funding.