NASA's Swift Telescope is Back in Action

Topic: Astronomy

The NASA Neil Gehrels Swift Observatory has resumed science operations with two of its three instruments. The team expects to restore the third instrument soon. Swift has been studying the universe for 21 years and helps astronomers track sudden cosmic events.

NASA's Neil Gehrels Swift Observatory is back to studying the universe after a brief shutdown. Two of its three science instruments, the Ultraviolet/Optical Telescope and X-ray Telescope, were switched back on August 26. The third instrument, the Burst Alert Telescope, will resume operations within the next few weeks.

Swift has been in orbit for 21 years, making it one of NASA's most versatile observatories. It studies the universe across multiple wavelengths of light and is especially valuable for tracking sudden, short-lived cosmic events. When Swift detects an outburst, it can quickly turn toward the source and alert other observatories on the ground and in space.

However, Swift faces a challenge due to its location in low Earth orbit. Even hundreds of miles above Earth, traces of the planet's atmosphere remain, creating drag on spacecraft. This causes their orbits to drop over time. NASA tried to raise Swift's orbit by contracting Katalyst Space to send another spacecraft, called LINK, to capture and lift it into a higher orbit. However, LINK developed problems with controlling its orientation, and the mission was abandoned.

The team now expects Swift to reach an important altitude threshold of 185 miles (300 kilometers) within the next one to two months. Once below this altitude, operating the telescope becomes more difficult, and the spacecraft is expected to lose altitude quickly.

Why It Matters

Understanding how our universe works is crucial for India's space research and development goals. Swift's observations help scientists track cosmic events that can impact Earth's climate and environment.

Key Facts

• The NASA Neil Gehrels Swift Observatory has been in orbit for 21 years.
• Two of Swift's three science instruments have resumed operations, with the third expected to resume soon.
• Swift is located in low Earth orbit, which causes its orbit to drop over time due to atmospheric drag.
• NASA tried to raise Swift's orbit by sending another spacecraft, called LINK, but the mission was abandoned.
• Swift is expected to reach an important altitude threshold of 185 miles (300 kilometers) within the next one to two months.

Key Terms

Orbit

The path that a spacecraft or celestial body follows around a larger object, such as Earth.

Implications

Understanding how our universe works is crucial for India's space research and development goals. Swift's observations help scientists track cosmic events that can impact Earth's climate and environment.