No, not if you think of horizontal plane in the strict geometric sense of plane. If that were true, we would see all the stars in a straight line only, with blackness everywhere else. You are probably thinking about what you are learning regarding the Milky Way. Yes, in Universal terms it is a big, relatively thin and flat swirling disc of stars with a super-massive black hole in its center. But 'thin and flat' in universal terms doesn't quite mean that we would 'see' the galaxy from earth as if it's a well-made crepe. Even though we are out in one of Milky Way's arms, the view from earth is mostly cloud-like. If you are fortunate enough to live where the night sky is not hopelessly polluted with light, you have seen the broad, cloudy path through the sky that inspires the Milky Way's name. You are actually seeing the 'width' of the galaxy where the stars are more dense. The rest of the stars in the sky are stars that are closer to us in the cloudy bulk of this part of the galaxy. We do see some other galaxies with the naked eye as well, but not that many; most are much too far away to see with the naked eye.
Speaking of crepes, imagine yourself now living on a single atom in the center of the thickness of a crepe. Is your 'galaxy' a relatively flat and thin disc? Well, yes... but you'll see nothing but other atoms all around you, just the same.
There isn't one. They all orbit in roughly the same plane. Pluto orbits in a different plane, but that's not classed as a planet now, of course.
No, not all stars are the same color. The color of a star is determined by its temperature, with hotter stars appearing bluer and cooler stars appearing redder. Stars can come in various colors such as blue, white, yellow, orange, and red.
No. They come in all shapes and sizes. Colors too! It all depends on how much matter the star takes in during its formation.
Stars that can be seen in all seasons include Polaris (the North Star), Sirius, Vega, and Capella. These stars are visible in the night sky throughout the year due to their proximity to the celestial poles or their location near the ecliptic plane.
All the planets move continuously among the fixed stars, so they were called the wandering stars.The planets all move in or near a fixed plane. As they wander they all appear to stay close to the plane of the Earth's orbit, which is the ecliptic.
1) Pressure increases with depth 2) Pressure is the same on the same horizontal plane of the liquid 3) Pressure varies with different liquids on the same horizontal plane 4) Pressure is the same in all directions about a point 5) A liquid seeks its own level
Yes.
yes
A vertical line has the same x-value. A horizontal line has the same y-value. The equation, y=3 would graph as a horizontal line crossing the y-axis at 3.
Lines which are parallel. All other lines on the same plane eventually intersect.
no
No
Coplanar points lie on the same plane. A plane is a flat, two-dimensional surface that extends infinitely in all directions. Coplanar points can be thought of as points that all lie in the same plane and can be connected by straight lines without leaving that plane.
No, there are more massive galaxies with stars in them.
All elements in the same horizontal row of the Periodic Table are in the same period, there are 7 periods.
There isn't one. They all orbit in roughly the same plane. Pluto orbits in a different plane, but that's not classed as a planet now, of course.
In the co-ordinate plane The horizontal number line is the 'x-axis'. The vertical number line is the y-axis. They intersect at the 'origin' ; coordinate (0,0) In the 3-dimensional system there is a third number line going from front to back , this is the z-axis. All three axes intersect at the origin , and have the the coordinates ( x,y,z) = (0,0,0)