Skybox is covering models

Question

I made solar system with sun in the centre and planets rotating around him. I wanted to add skybox, it is added properly but I cant see my planets.

Before adding skybox:

After adding skybox:

main skybox code:

    // skybox VAO
unsigned int skyboxVAO, skyboxVBO;
glGenVertexArrays(1, &skyboxVAO);
glGenBuffers(1, &skyboxVBO);
glBindVertexArray(skyboxVAO);
glBindBuffer(GL_ARRAY_BUFFER, skyboxVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(skyboxVertices), &skyboxVertices, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);

vector<std::string> faces
{
    "res/textures/skybox/right.png",
    "res/textures/skybox/left.png",
    "res/textures/skybox/top.png",
    "res/textures/skybox/bot.png",
    "res/textures/skybox/front.png",
    "res/textures/skybox/back.png"
};
unsigned int cubemapTexture = loadCubemap(faces);

window skybox code:

        // draw skybox as last
    glDepthFunc(GL_LEQUAL);  // change depth function so depth test passes when values are equal to depth buffer's content
    skyboxShader.use();
    view = glm::mat4(glm::mat3(camera.GetViewMatrix())); // remove translation from the view matrix
    skyboxShader.setMat4("view", view);
    skyboxShader.setMat4("projection", projection);

            // skybox cube
    glBindVertexArray(skyboxVAO);
    glActiveTexture(GL_TEXTURE0);
    glBindTexture(GL_TEXTURE_CUBE_MAP, cubemapTexture);
    glDrawArrays(GL_TRIANGLES, 0, 36);
    glBindVertexArray(0);
    glDepthFunc(GL_LESS); // set depth function back to default

vertex shader and fragment shader:

#version 330 core
layout (location = 0) in vec3 aPos;

out vec3 TexCoords;

uniform mat4 projection;
uniform mat4 view;

void main()
{
    TexCoords = aPos;
    vec4 pos = projection * view * vec4(aPos, 1.0);
    gl_Position = projection * view * vec4(aPos, 1.0);
}  

#version 330 core
out vec4 FragColor;

in vec3 TexCoords;

uniform samplerCube skybox;

void main()
{    
    FragColor = texture(skybox, TexCoords);
}