The designated photo I chose is Interstellar Comet 2I/Borisov. APOD: 2019 December 14
- Interstellar Comet 2I Borisov (nasa.gov)

My project plan：
Style: Information Report
Object of focus: Complete analysis of Interstellar Comet 2I/Borisov.
⚫ What is the Interstellar Comet 2I/Borisov?
⚫ Similarities to Solar System Comets
⚫ What is its significance for research?
A discussion parts.

Paragraph 1: Introduction to Interstellar Comet 2I/Borisov (150 words)
⚫ What is an Interstellar Comet?
⚫ Interstellar Comet 2I/Borisov's discovery processes
⚫ Physical characteristics of its comets
Paragraph 2：exploration (300-400 words)
⚫ Other interstellar comets
⚫ Interstellar Comet 2I/Borisov Similarity to the Solar System
⚫ The discovery of interstellar comets
Paragraph 3：What do comets do? (300-400 words)
⚫ Initial characterization of interstellar comet
⚫ What brings comets close to Earth so they can be observed?
Paragraph 4：Structural composition of interstellar comets (300words)
⚫ Carbon monoxide-rich 2I/Borisov
⚫ The conclusion of the research on the structure

Paragraph 5：How 2I/Borisov are upending astronomy？（Discussion part）(350words)
Introduction
There are uncertainties in the universe, and interstellar comets are one of them. As an
"interstellar visitor", it impresses astronomers with its unique hyperbolic trajectory and
provides an important role for scientists to study the solar system and other galaxies.
Interstellar comets are comets that are in interstellar space and are not bound by the
gravitational pull of stars. Among them, Interstellar Comet 2I/Borisov was discovered
by Gennady Borisov on August 30, 2019. After the Astronomical Union named it, it
officially declared it to be an interstellar comet. It is the second interstellar object
discovered by scientists to break into the solar system. 2I/Borisov's nucleus is
surrounded by coma, dust, and gas clouds. Because the nucleus is obscured, which
means it is difficult to estimate its size. Its trajectory is extremely hyperbolic, and its
eccentricity and velocity are much higher than known weak hyperbolic comets.