If you play around with simple Shapes (Elipses, Circles) and then loft between the rotated sketches you can produce fairly similar effects.
You model half of a point with three sketches.
Loft between two using the third as the loft path.
Then mirror the body to make a full point.
Rotate tool with ‘copy’ by 72 degrees to produce 5 points.
Boolean all five.
Fillet edges to smooth.
This is not exact because you do not get the flat face like a balloon, but it will give you ‘food for thought’.
The sketch picture shows the three sketches, one elipse, one circle, and one spline.
Instead of the circle, you could hand draw a spline that will give a much flatter effect on the top and bottom surface of the star.
